9 Best Waterproof Crib Mattress Covers (November 2026)
The best waterproof crib mattress covers include the Crib Size SureGuard Mattress Encasement for six-sided coverage, the GRT 2 Pack Waterproof Crib Mattress Protector for overnight changes, and the Sealy Baby SafetyCase Breathable Waterproof Crib Mattress for zippered everyday protection.
On this page (6 sections)
- How we chose the best waterproof crib mattress covers
- The best waterproof crib mattress covers by use
- What should you check before buying a waterproof crib mattress cover?
- Waterproof crib mattress cover versus protector: are they different?
- Final verdict on the best waterproof crib mattress cover
- A careful measurement now helps the cover lie flat under the sheet. That is the point where protection, comfort and easy cleanup all come together.
The best waterproof crib mattress cover is the Crib Size SureGuard Mattress Encasement for parents who want six-sided protection around a standard crib mattress. GRT is the better fit for a spare cover, while Sealy offers another zippered option with a breathable surface.
That opening pick suits families who care about the sides and underside of the mattress as much as the top. A fitted cover can be easier to change, but it leaves more of the mattress exposed during an accident or a restless night.
A waterproof cover helps keep leaks, spit-up and other everyday messes from reaching the mattress. The main choice is not just waterproofing.
You also need to match the cover to the mattress size, depth, closure style and wash routine. A cover that is too shallow can pull at the corners, while one that is too loose can bunch under the sheet.
Depth matters in daily use because crib mattresses vary in thickness. A fitted skirt or zipper needs enough room to close flat without stretching the fabric or leaving gaps at the edges.
Closure style also shapes the routine at home. Zippered encasements take a little more setup, while fitted styles can often be stripped off with the sheet during a quick change.
Pack size is another practical point to weigh before you buy. A single cover works when laundry is quick, but a second cover helps when an accident happens late at night.
Material and surface feel can affect comfort under the fitted sheet. Cotton terry, smooth cotton, polyester and quilted surfaces each feel different, so think about the sleep setup you use now.
Wash care should fit the rhythm of your household as well. Some covers are made for frequent machine washing and drying, while others need a gentler or lower temperature cycle.
Use our guide to the best baby cribs if you're still choosing the sleep setup. If you already have a mattress, compare these covers with our best crib mattress protector guide.
Start with your mattress measurements and a clear sense of how often you expect to wash the cover. That simple check makes the shortlist much easier to judge.
Then narrow the choice by coverage, fit and care rather than by waterproof claims alone. The right cover should lie flat, stay secure and make cleanup simpler after a mess.
Our picks at a glance
-
1
Best for six-sided coverageCrib Size SureGuard Mattress Encasement
9.7/10 our score
See it on Amazon -
2
Best for overnight changesGRT 2 Pack Waterproof Crib Mattress Protector
9.6/10 our score
See it on Amazon -
3
Best for zippered everyday protectionSealy Baby SafetyCase Breathable Waterproof Crib Mattress
9.5/10 our score
See it on Amazon
- 4
Check itPlushDeluxe Crib Mattress Protector
Best for bamboo viscose softness - 5
Check itKeaBabies 2pk Waterproof Crib Mattress Protector Cover
Best for two fitted covers - 6
Check itBaby and Brooke Organic Bamboo from Viscose Fitted
Best for a simple bamboo-fabric option - 7
Check itSureGuard Smooth Waterproof Mattress Protector
Best for a smooth cotton top - 8
Check itHALO Breathable Crib Mattress Cover
Best for quilted mesh airflow - 9
Check itdavid's kids 2 Pack 52''x28'' Waterproof Crib
Best for an 8 in pocket
How we chose the best waterproof crib mattress covers
The best waterproof crib mattress cover should fit the mattress without loose areas, cover the surface you need protected and be practical to clean. We compared the listed dimensions, depth ranges, materials, closure styles, pack sizes and care instructions.
Fit was the first filter because a standard label does not always mean identical measurements. Length, width and depth all affect whether a cover sits flat or pulls tight at the corners.
A cover that bunches under a fitted sheet can shift during sleep. That is why depth range matters as much as the headline size when you compare two similar options.
Coverage came next in the comparison. A six-sided encasement wraps the top, sides and underside, while a fitted protector mainly covers the top and wraps around the edges.
Materials also shape daily use and feel. Cotton terry, smooth cotton, polyester, microfiber and bamboo viscose each handle moisture and washing in a different way.
Surface texture matters under a crib sheet because it changes how the bedding feels and moves. Quilted and terry tops add cushion, while smoother surfaces keep the mattress feel closer to the original.
Closure style affects both setup and laundry day. Zippers surround the mattress more fully, and fitted skirts usually come off faster for routine washing.
Pack size was weighed for households that want a clean spare during laundry. Two covers can make a nighttime accident easier to handle without waiting for a wash cycle to finish.
Care instructions were checked because they set the real limits on washing and drying. A low temperature or gentle cycle may suit some homes better than frequent warm washes.
Our score weighs specs, features and buyer feedback against what you're shopping for.
A full encasement offers more coverage than a fitted protector. A fitted cover is often easier to remove, and a 2-pack gives you a clean replacement during washing.
Those trade-offs guided the order of the picks below. Each option earned its place for a different need, from full coverage to a spare fitted cover for regular changes.
| Product | Best for | Size | Coverage | Care | Our score |
|---|---|---|---|---|---|
| Crib Size SureGuard Mattress Encasement | six-sided coverage | Crib, 28 x 52 in | Six-sided zippered encasement | Machine wash and dry | 9.7 |
| GRT 2 Pack Waterproof Crib Mattress Protector | overnight changes | Machine wash and tumble dry low | 9.6 | ||
| Sealy Baby SafetyCase Breathable Waterproof Crib Mattress | zippered everyday protection | 52 x 28 in | 9.5 | ||
| PlushDeluxe Crib Mattress Protector | bamboo viscose softness | 28 x 49 in | Machine wash | 9.4 | |
| KeaBabies 2pk Waterproof Crib Mattress Protector Cover | two fitted covers | Standard 52 x 28 in | Machine washable and dryable | 9.3 | |
| Baby and Brooke Organic Bamboo from Viscose Fitted | a simple bamboo-fabric option | 52 x 28 x 8 in | 8.9 | ||
| SureGuard Smooth Waterproof Mattress Protector | a smooth cotton top | Crib, 28 x 52 in | Machine wash and dry | 8.6 | |
| HALO Breathable Crib Mattress Cover | quilted mesh airflow | 28 x 52.5 in | Machine washable and dryer friendly | 8.3 | |
| david's kids 2 Pack 52''x28'' Waterproof Crib | an 8 in pocket | Low-temperature machine wash | 8.1 |
The best waterproof crib mattress covers by use
The SureGuard Encasement leads for six-sided coverage, while GRT and Sealy make strong cases for different cleanup routines. Each pick below has a different reason to choose it.
Crib Size SureGuard Mattress Encasement: Best for six-sided coverage
- 100% waterproof
- Six-sided zippered design
- Fits 28 x 52 in crib mattresses up to 6–8 in deep
- Cotton terry top
The six-sided design protects the mattress from liquids, stains, dust, dirt and dander on every side. Its zipper closes around crib mattresses up to 6–8 in deep.
Pros
- Six-sided waterproof coverage
- Cotton terry top
- Machine washable and dryable
Cons
- Single cover
- Zippered installation takes more effort than a fitted cover
The Crib Size SureGuard Mattress Encasement is the best waterproof crib mattress cover for parents who want protection on all six sides of the mattress. It fits a crib mattress measuring 28 x 52 in and accommodates mattresses 6–8 in deep.
The zippered design closes around the mattress instead of covering only the top and edges. SureGuard describes the cover as 100% waterproof and designed to block liquids, stains, dust, dirt and dander.
A 100% cotton terry top gives the cover a soft surface, while the design is described as noiseless and free from vinyl, PVC, phthalates and fire retardants. The cover can be machine washed and dried, which matters after a larger leak.
This is a single encasement, so you may want a second cover if washing and drying the first one will take longer than your routine allows. The zipper also takes more setup than a fitted sheet style cover.
Choose it when full coverage and a zippered closure matter most. For a standard top-and-side protector, a fitted model such as the SureGuard Smooth is quicker to put on.
GRT 2 Pack Waterproof Crib Mattress Protector: Best for overnight changes
- 2-pack
- 52 x 28 in size
- Fits mattresses from 4–9 in deep
- Four-layer waterproof design
Two fitted protectors give you a clean replacement while the other is being washed. The four-layer design uses a terry top, absorbent layers, a durability layer and TPU backing.
Pros
- Two covers in the pack
- Wide 4–9 in depth range
- Fitted skirt helps reduce shifting
Cons
- No zipper
- Requires low-temperature drying
The GRT 2 Pack Waterproof Crib Mattress Protector is a practical choice when you want a clean spare ready after a nighttime accident. Each cover measures 52 x 28 in and fits crib mattresses from 4–9 in deep.
Its four-layer construction combines an ultra-soft terry top, absorbent layers, a durability layer and impermeable TPU backing. The fitted skirt is designed to reduce sliding and shifting under a crib sheet.
Because the pack includes two covers, you can wash one while the other protects the mattress. GRT specifies machine washing and tumble drying on low, with mild detergent and no bleach.
This cover does not have a zipper. That makes the design simpler to remove, but it does not surround the mattress in the same way as a six-sided encasement.
Pick GRT if your mattress falls within the 4–9 in depth range and a 2-pack is more useful than a zipper. It is one of the easiest choices here for a regular wash-and-replace routine.
Sealy Baby SafetyCase Breathable Waterproof Crib Mattress: Best for zippered everyday protection
- 100% waterproof
- Full zippered encasement
- 52 x 28 in size
- Machine washable and dryer friendly
Sealy combines a full zipper with a breathable micro-weave sleep surface and waterproof protection. The cover is designed for standard crib mattresses and toddler beds.
Pros
- Full zippered coverage
- Breathable micro-weave surface
- Washer and dryer friendly
Cons
- Single cover
- Zippered cover takes longer to remove than a fitted sheet style
The Sealy Baby SafetyCase Breathable Waterproof Crib Mattress Protector Pad suits parents who want a full zippered cover with a breathable sleep surface. It measures 52 x 28 in and is designed for standard crib mattresses and toddler beds.
The cover fully encases the mattress and uses a zipper to help keep it from slipping or sliding beneath the fitted sheet. Its micro-weave fabric creates a soft, airy layer, while the waterproof barrier helps block leaks, spit-up, spills and accidents.
Sealy describes the cover as noiseless and lightly quilted. The material is 100% polyester, and the cover is machine washable and dryer friendly for repeated cleanup.
This is a single cover, so a second one may be useful if you want a dry replacement during washing. Its zippered design provides more surrounding coverage than a standard fitted cover, but it takes longer to remove.
Choose Sealy if you prefer a full encasement and want a breathable surface. It is also a useful option for a crib that will later transition to toddler-bed use.
PlushDeluxe Crib Mattress Protector: Best for bamboo viscose softness
- 28 x 49 in size
- Bamboo viscose fabric
- 100% waterproof membrane
- Fitted sheet style with skirt up to 7.5 in
This fitted cover pairs a quilted terry top with a breathable waterproof membrane. Its 28 x 49 in dimensions suit crib and toddler mattresses listed at that size.
Pros
- Bamboo viscose fabric
- Noiseless design
- Deep fitted skirt
Cons
- Shorter length than a 52 x 28 in standard cover
- Single protector
The PlushDeluxe Crib Mattress Protector is the best waterproof crib mattress cover here for shoppers focused on a bamboo viscose fabric and a soft, quiet surface. It measures 28 x 49 in and fits crib and toddler mattresses up to 7.5 in deep.
Its quilted terry top sits over a breathable waterproof membrane. The design is intended to resist fluids, perspiration, bedwetting and stains while allowing air circulation.
The fitted sheet style uses a deep skirt to hold the cover snugly around the mattress. That makes it easier to put back on after washing than a zippered encasement, though it offers less full-mattress coverage.
The dimensions need close attention. This cover is 49 in long rather than the 52 in length used by several standard crib covers here.
Measure your mattress before choosing it.
Pick PlushDeluxe when your mattress matches the 28 x 49 in size and you want bamboo viscose, a quilted terry top and a noiseless fitted design.
KeaBabies 2pk Waterproof Crib Mattress Protector Cover: Best for two fitted covers
- 2-pack
- Standard 52 x 28 in size
- 8 in fit
- Elastic hem and SnugFit Bands
KeaBabies gives you two fitted waterproof covers for standard crib mattresses. Elastic edging and SnugFit Bands are designed to hold the cover in place.
Pros
- Two covers included
- Standard crib size
- Machine washable and dryable
Cons
- Product color is Soft White/Mavy
- The listed fit is 8 in
The KeaBabies 2pk Waterproof Crib Mattress Protector Cover is a strong choice when you want two standard-size fitted covers for routine changes. The pack includes two protector sheets sized for a standard 52 x 28 in crib mattress with an 8 in fit.
The quilted cotton top is designed to feel soft and quiet under a fitted crib sheet. A waterproof bottom helps protect the mattress from spills, leaks and accidents.
Elastic edging and SnugFit Bands are intended to keep the protector secure. The cover is machine washable and dryable, which supports a simple rotation between the two included sheets.
KeaBabies describes the covers as lightweight and portable for travel, daycare or sleepovers. The listed color is Soft White/Mavy, so check that finish if matching nursery bedding matters to you.
Choose this 2-pack when your mattress matches the standard 52 x 28 in size and you want easy fitted-cover changes. For a wider depth range, GRT covers 4–9 in mattresses.
Baby and Brooke Organic Bamboo from Viscose Fitted: Best for a simple bamboo-fabric option
- Fitted crib mattress protector
- 52 x 28 x 8 in size
- 100% waterproof
- Absorbent and breathable
This fitted protector is sized for a 52 x 28 x 8 in crib mattress and combines waterproof protection with absorbent, breathable construction.
Pros
- Standard crib dimensions
- 8 in fit
- Fitted design
Cons
- Pack count is not specified
- Care details are not specified
The Baby and Brooke Organic Bamboo from Viscose Fitted is a simple fitted option for a standard 52 x 28 x 8 in crib mattress. It is described as 100% waterproof, absorbent and breathable.
The design suits parents who want a cover that fits an 8 in mattress without choosing a zipper. Its fitted shape keeps the protector under the crib sheet and makes the cover part of a normal sheet-changing routine.
The product information identifies organic bamboo from viscose in the name and lists 100% cotton in the bullets. Since the available care details do not specify a wash method, check the care instructions before planning frequent washing.
This is a useful middle choice between a full encasement and a multi-pack. It has the standard dimensions many crib mattresses use, but the available information does not specify the pack count.
Choose it when the 52 x 28 x 8 in fit matches your mattress and you want a fitted waterproof cover. If you need two covers, choose a product that clearly includes a 2-pack.
SureGuard Smooth Waterproof Mattress Protector: Best for a smooth cotton top
- 100% waterproof
- Smooth cotton top
- Fits 28 x 52 in mattresses up to 6 in deep
- Fitted sheet design
The smooth cotton surface keeps the fitted cover close to the mattress feel while the waterproof layer blocks everyday liquids and stains. It fits mattresses up to 6 in deep.
Pros
- Smooth cotton top
- Fitted sheet installation
- Machine washable and dryable
Cons
- Single cover
- Limited to mattresses up to 6 in deep
The SureGuard Smooth Waterproof Mattress Protector is the best waterproof crib mattress cover for a smooth cotton top and quick fitted-sheet-style installation. It fits a 28 x 52 in crib mattress up to 6 in deep.
The smooth cotton surface is designed to retain the feel of the mattress while wicking moisture. SureGuard describes the cover as soft, noiseless and breathable, with protection against everyday liquids, stains, dust, dirt, dander and allergens.
The fitted skirt slips around the mattress instead of closing with a zipper. That makes it simpler to remove and replace during routine washing.
The cover is machine washable and dryable.
This is a single cover, so frequent accidents may make two covers more convenient. The 6 in depth limit also rules it out for thicker mattresses that need a deeper pocket.
Pick it when your mattress is no more than 6 in deep and you prefer smooth cotton over quilted or terry surfaces. For a deeper mattress, compare GRT or PlushDeluxe first.
HALO Breathable Crib Mattress Cover: Best for quilted mesh airflow
- Two layers of quilted mesh
- Waterproof lining
- 28 x 52.5 in size
- Elastic sides
HALO uses two layers of quilted mesh over a waterproof lining. Stretchy elastic sides make the cover easy to change on standard crib and toddler mattresses.
Pros
- Quilted mesh construction
- Waterproof lining
- Easy-change elastic sides
Cons
- Single cover
- Slightly longer than a 52 in mattress
The HALO Breathable Crib Mattress Cover suits parents who want a waterproof cover with quilted mesh and stretchy sides. It measures 28 x 52.5 in and is designed to fit most standard crib and toddler mattresses.
Two layers of soft quilted mesh create the cover's surface, while a waterproof lining helps block spills, leaks and accidents. The sleep surface is 100% polyester, with polyester-spandex sides for stretch.
Elastic sides make the cover easy to change. That can be useful when you want to remove the cover with the crib sheet during a normal laundry cycle rather than unzip an encasement.
HALO lists this as a single cover that is machine washable and dryer friendly. Its 52.5 in length is slightly longer than the 52 in length used by many standard crib mattresses, so check the fit before use.
Choose HALO if quilted mesh and easy changes matter more than a 2-pack. For full six-sided coverage, choose a zippered encasement instead.
david's kids 2 Pack 52''x28'' Waterproof Crib: Best for an 8 in pocket
- 2-pack
- 52 x 28 in size
- 8 in deep pockets
- Four-layer construction
This 2-pack uses 8 in deep pockets and a 360-degree elastic skirt to fit standard crib and toddler mattresses. The four-layer polyester construction is designed for waterproof, quiet coverage.
Pros
- Two covers
- 8 in pockets
- Ultrasonic embossed surface
Cons
- Low-temperature gentle washing is specified
- Single listed color is white
The david's kids 2 Pack 52''x28'' Waterproof Crib Mattress Protector Pad Cover is a useful pick for a standard crib mattress with an 8 in depth. The pack includes two covers measuring 52 x 28 in, each with pockets that stretch up to 8 in.
Its four-layer construction is built around an ultra-soft microfiber surface, absorbent material and TPU waterproof backing. Ultrasonic embossing creates a smooth surface without traditional stitching, and the 360-degree elastic skirt is designed to limit bunching and shifting.
The covers are intended to be quiet under a fitted crib sheet. Care instructions call for low-temperature machine washing on a gentle cycle, which is worth planning around if you wash bedding often.
The two-cover pack gives you a spare during laundry. The listed color is white, and the cover uses a pull-on fitted design rather than a zipper.
Choose david's kids when you need two standard-size covers with 8 in pockets. If your mattress depth varies from 4–9 in, GRT offers the broader stated range.
What should you check before buying a waterproof crib mattress cover?
The most important checks are the mattress length, width and depth, followed by the cover's closure style and wash instructions. A waterproof cover only helps if it lies flat and stays secure under the fitted crib sheet.
Does the cover fit a standard 52 x 28 in crib mattress?
Many waterproof crib mattress covers use the standard 52 x 28 in size, including GRT, Sealy, KeaBabies, SureGuard Smooth and david's kids. HALO measures 28 x 52.5 in, while PlushDeluxe measures 28 x 49 in.
Measure the mattress itself rather than assuming every crib mattress has identical dimensions. Also check the depth.
GRT fits 4–9 in, SureGuard Smooth fits up to 6 in, PlushDeluxe fits up to 7.5 in and KeaBabies and david's kids list an 8 in fit.
Is a fitted cover or a zippered encasement easier?
A fitted cover is usually easier to remove for routine washing, while a zippered encasement surrounds more of the mattress. GRT, PlushDeluxe, KeaBabies, Baby and Brooke, SureGuard Smooth, HALO and david's kids use fitted styles.
The SureGuard Encasement and Sealy SafetyCase use zippers. Choose one of them when full surrounding coverage is your priority and you are comfortable taking more time during setup.
Should you buy one cover or a 2-pack?
A 2-pack is more convenient if you expect frequent washing or want a clean replacement ready at night. GRT, KeaBabies and david's kids include two covers.
A single cover can be enough when messes are less frequent and your washer and dryer routine is quick. The SureGuard Encasement, Sealy, PlushDeluxe, Baby and Brooke, SureGuard Smooth and HALO are single-cover choices based on the available product information.
How should you wash and use a waterproof crib mattress cover?
Follow the care instructions for the specific cover, use the correct depth fit and place a fitted crib sheet over the protector. GRT specifies mild detergent, no bleach and low tumble drying, while david's kids specifies a low-temperature gentle cycle.
Machine-washable designs include SureGuard Encasement, Sealy, PlushDeluxe, KeaBabies, SureGuard Smooth, HALO and david's kids. Let the cover dry fully before putting it back on the mattress.
If you use a Newton mattress, read Can You Use a Protector on a Newton Crib Mattress? before choosing a cover. For material preferences, compare best organic crib mattress protector options.
Waterproof crib mattress cover versus protector: are they different?
The terms are often used for the same type of fitted or encased layer that blocks liquid from reaching the mattress. The practical differences are the coverage, fit, materials, closure and cleaning routine.
Coverage is the clearest dividing line between the two styles. An encasement wraps around the mattress, while a fitted protector covers the top and tucks around the edges with elastic or a skirt.
That difference matters when a spill runs down the side of the mattress. A fitted cover may still protect the top well, but the side of the mattress can remain exposed if liquid travels there.
Fit also changes how each style behaves under a sheet. A zippered cover can stay in place once closed, while a fitted cover depends on elastic tension and the right depth range.
Materials shape the feel of the sleep surface as much as the protection. Cotton terry can feel soft and absorbent, polyester can dry with a different hand feel, and quilted tops add a light cushion.
Wash routine is another practical split between the styles. Fitted covers often come off quickly, and zippered encasements may take an extra minute to open and close during laundry.
Neither style should replace a fitted crib sheet. The waterproof layer sits under the sheet, and the sheet remains the part that touches baby during sleep.
A waterproof cover also does not make the mattress itself more supportive. It protects the surface from liquid and stains, while the mattress underneath still needs to be firm and flat for safe sleep.
Noise is worth considering for light sleepers in the same room. Some waterproof layers can feel crinkly, while softer fabrics are designed to stay quiet when a baby moves.
Thickness matters too, especially on a crib mattress that already has a clear sleep surface. A bulky cover can change the fit of the sheet, so a low profile layer is often easier to use.
For broader product comparisons, see best baby crib mattress cover. A crib mattress cover is different from a Bassinet With Mesh Cover: What It Involves because bassinet covers are made for a different sleep space and fit.
The best choice depends on whether you value full wrapping or faster changes. Match the style to your mattress size, depth and laundry routine, and the label matters less than the fit in use.
Final verdict on the best waterproof crib mattress cover
The Crib Size SureGuard Mattress Encasement is the best overall choice when six-sided waterproof coverage, a cotton terry top and a zippered fit matter most. Choose GRT if you want two covers and a 4–9 in depth range.
Pick Sealy for another zippered option with a breathable micro-weave surface. Choose PlushDeluxe for a 28 x 49 in mattress, KeaBabies for two standard fitted covers or SureGuard Smooth for a smooth cotton top on a mattress up to 6 in deep.
Those picks cover the main routines in this roundup. A zippered encasement suits full coverage, a fitted 2-pack suits frequent washing, and a smooth cotton top suits a simpler sheet change.
Match the style to the mattress you already own before you decide. A cover can only work well when the length, width and depth sit within the stated range.
Check the care instructions as part of the choice as well. Low temperature drying or a gentle cycle may be fine for some homes and a hassle for others.
Before ordering, measure the mattress and compare its depth with the cover's stated range. If you're deciding between mattress sizes for a growing child, read crib mattress vs toddler mattress and compare best naturepedic crib mattress options next.
A careful measurement now helps the cover lie flat under the sheet. That is the point where protection, comfort and easy cleanup all come together.
Our top 3 picks at a glance
-
1
Best for six-sided coverageCrib Size SureGuard Mattress Encasement
9.7/10 our score
See it on Amazon -
2
Best for overnight changesGRT 2 Pack Waterproof Crib Mattress Protector
9.6/10 our score
See it on Amazon -
3
Best for zippered everyday protectionSealy Baby SafetyCase Breathable Waterproof Crib Mattress
9.5/10 our score
See it on Amazon
Frequently asked questions
What is the best waterproof crib mattress cover?
The Crib Size SureGuard Mattress Encasement is the strongest choice when you want six-sided waterproof coverage. Its zipper surrounds a 28 x 52 in crib mattress up to 6–8 in deep.
Choose a 2-pack such as GRT, KeaBabies or david's kids if a spare cover matters more.
What size waterproof crib mattress cover do I need?
Measure the mattress length, width and depth before choosing a cover. Several options here fit a standard 52 x 28 in mattress, but depth ranges differ.
GRT fits 4–9 in, while SureGuard Smooth fits up to 6 in and PlushDeluxe fits up to 7.5 in.
Is a zippered crib mattress cover better than a fitted cover?
A zippered cover surrounds more of the mattress, while a fitted cover is usually faster to remove for routine washing. The SureGuard Encasement and Sealy SafetyCase use zippers.
GRT, PlushDeluxe, KeaBabies and SureGuard Smooth use fitted designs.
How many waterproof crib mattress covers should I have?
Two covers make cleanup easier because one can go on the mattress while the other is in the wash. GRT, KeaBabies and david's kids include two protectors.
A single cover can still work if you can wash and dry it before the next sleep period.
Can I use a waterproof cover under a crib sheet?
Yes, these covers are designed to sit under a fitted crib sheet. Put the waterproof cover directly over the mattress, make sure it fits flat and securely, then add the crib sheet.
The cover should not bunch or leave loose fabric around the sleep surface.
About this guide: Our look at waterproof crib mattress covers draws on maker specs, materials and what owners report. See how we research.



