9 Best Naturepedic Crib Mattresses (November 2026)

The best Naturepedic crib mattresses include the Newton Baby Essential Crib Mattress for breathable washable care, the Modera Organic Cotton Covered Dual-Sided Crib Mattress for a cotton-covered dual-side design, and the Sealy Baby Flex Cool 2 Stage Crib for coil support and airflow channels.

On this page (10 sections)

1. Which Naturepedic crib mattress alternative is best?
2. How we compared these crib mattresses
3. Best Naturepedic crib mattress picks by construction
4. How do cover materials affect crib mattress care?
5. How much does a crib mattress weigh?
6. Naturepedic versus other organic crib mattress options
7. Should you choose a mini crib mattress or standard crib mattress?
8. Do you need a crib mattress protector?
9. Naturepedic versus Newton crib mattresses
10. Final verdict on the best Naturepedic crib mattress alternatives

The best Naturepedic crib mattress alternative for breathable, washable care is the Newton Baby Essential. It combines a Wovenaire core, a washable cotton cover, a 4 in profile and infant-to-toddler use.

We compared these crib mattresses by construction, weight, cover design, waterproof protection, size and cleaning needs. Naturepedic shoppers may also want to compare organic cotton, foam, coil, fiber and breathable polymer designs before deciding.

If you're still choosing the crib itself, start with our guide to the best baby cribs. For more material-focused options, see our comparison of the best organic crib mattress designs.

Our picks at a glance

1. 1
   Best for breathable washable care

   Newton Baby Essential Crib Mattress

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a cotton-covered dual-side design

   Modera Organic Cotton Covered Dual-Sided Crib Mattress

   9.6/10 our score

   See it on Amazon
3. 3
   Best for coil support and airflow channels

   Sealy Baby Flex Cool 2 Stage Crib

   9.6/10 our score

   See it on Amazon

4. 4

   Newton Baby Waterproof Crib Mattress

   Best for a waterproof breathable core
   Check it
5. 5

   Newton Baby Waterproof Crib Mattress

   Best for a gray washable cover
   Check it
6. 6

   Graco Ultra 2-in-1 Premium Dual Sided Baby

   Best for a washable waterproof foam cover
   Check it
7. 7

   Delta Children Serta Perfect Start Limited Dual Sided

   Best for a lightweight recycled fiber core
   Check it
8. 8

   Newton Baby Mini Crib Mattress 37.75" x

   Best for mini and portable cribs
   Check it
9. 9

   Babyletto Pure Core Crib Mattress

   Best for a lightweight polyester core
   Check it

Which Naturepedic crib mattress alternative is best?

The Newton Baby Essential is the best overall choice when washable care and a breathable construction matter most. The Sealy Baby Flex Cool is the better fit for coil construction, while Modera suits shoppers who want an organic cotton cover and a waterproof protector.

Our score weighs construction, cover design, cleaning features, size, weight and buyer feedback against the needs of someone searching for a Naturepedic crib mattress. A higher score means the product covers more of those needs, not that it suits every crib.

How we compared these crib mattresses

Construction is the first major difference. Newton Baby uses Wovenaire, Sealy uses pocketed coils, Modera and Graco use foam, Delta Children uses a fiber core, and Babyletto uses polyester.

Cover design changes daily care. Newton Baby focuses on washable covers and cores, Sealy adds a cotton cover and waterproof barrier, Modera uses an organic cotton cover with a removable waterproof protector, and several foam or fiber models use waterproof covers.

Weight also matters when you need to lift a mattress for sheet changes. The standard-size models range from 8.5 lb for Delta Children to 15 lb for the Newton Waterproof models, while the Newton Mini weighs 8.4 lb.

Best Naturepedic crib mattress picks by construction

1

Newton Baby Essential Crib Mattress: Best for breathable washable care

9.7/10Our score

• Wovenaire breathe-thru core
• Fully washable cover and core
• 52 x 28 x 4 in
• Infant and toddler 2-stage design

The Newton Baby Essential uses a Wovenaire core and a washable cotton cover. Its 4 in thickness and 11 lb weight make it the lightest standard-size Newton option here.

See it on Amazon

Pros

• Washable inner core and cover
• GREENGUARD Gold certified
• Infant and toddler use

Cons

• No waterproof layer stated
• Standard crib size only

The Newton Baby Essential is the strongest match for parents who want a washable breathable crib mattress. Its Wovenaire core is designed to allow airflow, and the removable cotton cover and inner core can both be cleaned.

At 52 x 28 x 4 in, it is thinner than the other standard-size models in this roundup. Its 11 lb weight also makes it easier to lift than the 14.9 lb Sealy or 15 lb Newton Waterproof options.

Newton Baby describes this as a 2-stage mattress for infants and toddlers. It is GREENGUARD Gold certified, has firm support and comes in white.

The thinner 4 in profile can suit cribs where clearance matters, but thickness alone does not change the need for a snug, flat fit. Measure the inside of the crib and confirm the mattress sits without gaps before first use.

Cleaning is the main reason to choose this model. The cover can be machine washed, while the core can be rinsed in a shower or bath, which takes more time than wiping a surface but reaches the layer under the cover.

Choose it when washable care and a breathable core are your main priorities. If waterproof protection is essential, compare it with the Newton Waterproof model or a mattress with a waterproof cover.

2

Modera Organic Cotton Covered Dual-Sided Crib Mattress: Best for a cotton-covered dual-side design

9.6/10Our score

• Organic cotton cover
• Firm infant side
• Cooling gel memory foam toddler side
• Waterproof removable protector

Modera pairs a firm high-density foam infant side with a softer cooling gel memory foam toddler side. Its removable waterproof protector is designed for machine washing.

See it on Amazon

Pros

• Dual-sided infant and toddler design
• Organic cotton cover
• Waterproof removable protector

Cons

• Memory foam construction
• Dimensions differ slightly from 52 x 27.5 in models

Modera suits shoppers who want a dual-sided memory foam mattress with an organic cotton cover. The infant side uses high-density foam with a firm, flat surface, while the toddler side uses softer gel memory foam.

Its 52 x 27.5 x 5.5 in size differs slightly from the 52 x 28 in models, so measure the crib before buying. The removable waterproof protector is designed for machine washing and helps shield the mattress from spills.

Modera identifies the materials as CertiPUR-US and OEKO-TEX certified. The two faces serve different stages, so flipping the mattress is part of the intended routine.

Use the firm high-density side for infants and reserve the moldable gel side for the toddler stage. Daily care centers on the zippered protector rather than a washable core.

Choose Modera if the cover design and dual-sided foam layout fit your priorities. The small width difference makes crib fit more important than brand matching.

3

Sealy Baby Flex Cool 2 Stage Crib: Best for coil support and airflow channels

9.6/10Our score

• Pocketed coil construction
• Cotton cover with airflow channels
• PVC-free waterproof barrier
• Firm infant and softer toddler sides

The Sealy Baby Flex Cool uses a 204-coil system, a cotton cover and a PVC-free waterproof barrier. Reinforced borders and corner pillars support a flat sleep surface.

See it on Amazon

Pros

• Coil construction
• Waterproof barrier
• GREENGUARD Gold certified

Cons

• Heaviest standard-size pick here
• Thicker than the Newton Essential

The Sealy Baby Flex Cool is the best fit for shoppers who prefer pocketed coil construction. Its 204 heat-tempered interwoven coils sit inside a design with a cotton cover, airflow channels, reinforced borders and corner pillars.

The 52 x 28 x 5.75 in mattress weighs 14.9 lb, making it one of the heavier picks here. Its firm infant side changes to a softer toddler side as your child moves between stages.

A PVC-free waterproof barrier helps protect against leaks and spills. Sealy Baby also identifies the mattress as GREENGUARD Gold certified and ASTM tested.

Coil construction gives a different feel from foam or fiber models, with support distributed across individual springs rather than a single foam slab. The reinforced edges and corner pillars help the mattress keep its shape and help sheets sit more evenly.

The trade-off is weight and thickness. At 14.9 lb and 5.75 in, this mattress is harder to lift and store than lighter or thinner options.

Choose this model when coil support, a cotton cover and a waterproof barrier matter more than a lightweight design.

4

Newton Baby Waterproof Crib Mattress: Best for a waterproof breathable core

9.5/10Our score

• Wovenaire breathe-thru core
• Waterproof toddler-side layer
• Washable cover and core
• 52 x 28 x 5.5 in

This Newton Baby model adds a waterproof layer on the toddler side while keeping the Wovenaire core and washable design. It is a 5.5 in, 15 lb standard-size mattress.

See it on Amazon

Pros

• Washable inner core and cover
• Waterproof toddler side
• GREENGUARD Gold certified

Cons

• Heavier than the Essential
• Waterproof layer is specified for the toddler side

The Newton Baby Waterproof Crib Mattress is best for a waterproof layer paired with a breathable Wovenaire core. It measures 52 x 28 x 5.5 in and weighs 15 lb.

The added waterproof layer is on the toddler side of the 2-stage mattress. The removable cover and inner core are washable, so the cleaning approach differs from a mattress with only a wipe-clean surface.

Newton Baby identifies the core as Wovenaire and the construction as food-grade polymer. The mattress is firm, GREENGUARD Gold certified and designed for infant-to-toddler use.

The waterproof layer is specified for the toddler side, so it should not be assumed to protect the infant side in the same way. At 5.5 in and 15 lb, this is thicker and heavier than the 4 in, 11 lb Essential.

For care, the cover can be machine washed and the core rinsed, with cool water used for hand washing or spot cleaning. Drying thoroughly on low is part of the process, so allow time before returning the mattress to the crib.

Choose it when you want the Newton breathable design with added moisture protection for the toddler side.

5

Newton Baby Waterproof Crib Mattress: Best for a gray washable cover

9.3/10Our score

• Gray natural viscose cover
• Wovenaire core
• Washable cover and core
• 52 x 28 x 5.5 in

This gray Newton Baby Waterproof Crib Mattress shares the 5.5 in size, 15 lb weight and washable Wovenaire design of the white version. The cover is natural viscose.

See it on Amazon

Pros

• Gray cover option
• Washable inner core and cover
• GREENGUARD Gold certified

Cons

• Same heavier weight as the white model
• Product data does not state a waterproof layer for this color version

This gray Newton Baby Waterproof Crib Mattress fits shoppers who want a washable Newton design with a gray cover. It has the same 52 x 28 x 5.5 in dimensions and 15 lb weight as the white waterproof model.

Its natural viscose cover and Wovenaire core support the washable design. The product data identifies a breathable construction, firm support, GREENGUARD Gold certification and infant-to-toddler use.

The gray color is the main visible difference between this model and the white Newton Waterproof pick above. Compare the exact color and product details before ordering because the product data does not state the same waterproof-layer detail for this version.

Because the dimensions and weight match the white model, lifting, sheet fit and crib clearance should be considered the same. For cleaning, the washable cover and removable core follow the Newton approach of machine washing the cover and rinsing the core.

Use cool water for the core and dry thoroughly on low, without hanging dry or bleaching. Choose it when gray works better with your nursery textiles.

6

Graco Ultra 2-in-1 Premium Dual Sided Baby: Best for a washable waterproof foam cover

8.6/10Our score

• CertiPUR-US certified foam core
• Waterproof machine-washable cover
• Firm infant and softer toddler sides
• 52 x 28 x 6 in

Graco uses a foam core with a removable cover, a waterproof sleep surface and two firmness sides. The 12.7 lb mattress expands after delivery and may take up to 48 hours in a room-temperature setting.

See it on Amazon

Pros

• Machine-washable cover
• Waterproof sleep surface
• GREENGUARD Gold and CertiPUR-US certified

Cons

• Cover must hang dry
• Thickest standard-size pick here

The Graco Ultra suits shoppers who want a foam mattress with a waterproof machine-washable cover. Its firm infant side and softer toddler side give it a 2-stage layout.

The mattress measures 52 x 28 x 6 in and weighs 12.7 lb. It uses a polyurethane foam core, a polyester cover and a waterproof sleep surface.

Graco identifies the foam as CertiPUR-US certified and the mattress as GREENGUARD Gold certified. The cover should be washed in cold water on a delicate cycle and hung to dry.

The labeled sides make the stage change clear for any caregiver flipping the mattress. At 6 in, this is the thickest standard-size design here, so check crib clearance as well as base fit.

The foam core is not described as a rinseable core like the Newton models. Choose Graco if a removable waterproof cover matters more than a washable inner core.

7

Delta Children Serta Perfect Start Limited Dual Sided: Best for a lightweight recycled fiber core

8.4/10Our score

• Fiber core made from recycled bottles
• Waterproof cover
• Dual-sided infant and toddler design
• 52 x 27.5 x 5.5 in

The Serta Perfect Start uses a fiber core made from over 300 recycled water bottles and a waterproof cover. At 8.5 lb, it is one of the lighter standard-size options.

See it on Amazon

Pros

• Lightweight fiber core
• Waterproof cover
• GREENGUARD Gold certified

Cons

• Width is 27.5 in
• Cover pattern may vary

The Serta Perfect Start is the best fit for a lightweight fiber-core mattress with a waterproof cover. Its core is made from over 300 recycled water bottles, and the mattress weighs 8.5 lb.

It measures 52 x 27.5 x 5.5 in and has dual infant and toddler sides. The waterproof cover helps with cleanup, while the fiber core gives this model a different feel and construction from foam, coil and Wovenaire picks.

Delta Children identifies the mattress as GREENGUARD Gold certified and JPMA certified. It is made in the USA, and the cover pattern may vary.

At 8.5 lb, this is the lightest standard-size mattress in this roundup. That lower weight can make sheet changes, crib setup and moving the mattress between rooms noticeably easier than with 14.9 lb or 15 lb models.

The recycled fiber core is the main construction difference. It creates a firm base without foam or coils, and the dual sides let the same mattress move from infant use to toddler use by flipping it.

The waterproof cover is the practical barrier for everyday spills. Wipeable protection is convenient, but it is a different routine from removing and rinsing a washable inner core.

Choose it when low lifting weight and a recycled fiber core matter. Measure your crib because its stated width is 27.5 in rather than 28 in.

8

Newton Baby Mini Crib Mattress 37.75" x: Best for mini and portable cribs

8.4/10Our score

• 37.75 x 23.75 x 3 in
• Wovenaire breathe-thru core
• Washable cover and removable core
• GREENGUARD Gold certified

The Newton Baby Mini Crib Mattress is made for most mini or portable cribs, not standard cribs, play yards or soft-sided cribs. Its washable Wovenaire design is 3 in thick.

See it on Amazon

Pros

• Mini-crib size
• Washable inner core and cover
• Breathable construction

Cons

• Does not fit standard cribs
• Not intended for play yards or soft-sided cribs

The Newton Baby Mini Crib Mattress is the right choice for mini or portable cribs, not standard cribs. It measures 37.75 x 23.75 x 3 in and weighs 8.4 lb.

Its Wovenaire core, washable cover and washable removable core follow the same general care idea as the standard Newton models. The product is firm, breathable and GREENGUARD Gold certified.

Newton Baby says this model fits most mini or portable cribs, including certain Galileo Mini Crib, Babyletto, DaVinci and Carter's by DaVinci models. It is not intended for play yards or soft-sided cribs.

Size is the deciding factor here, not just preference for a smaller mattress. A standard crib needs a mattress around 52 in long, while this mini model is built for a much smaller surface.

At 3 in thick, the mini profile is lower than the standard Newton models. That slimmer shape can suit a mini crib frame, but it should still be checked for a firm, flat fit with no gaps at the edges.

Weight is also lower at 8.4 lb, which helps when lifting the mattress for sheet changes. The trade off is limited use, since the mattress cannot be moved up to a standard crib later.

Choose it only after confirming the mini-crib dimensions. If your crib is standard size, use one of the 52 in long mattresses instead.

9

Babyletto Pure Core Crib Mattress: Best for a lightweight polyester core

8.1/10Our score

• Recyclable polyester core
• Quilted cotton face
• PVC-free waterproof backing
• Firm infant and medium toddler sides

Babyletto combines a recyclable polyester core with a removable 2-in-1 waterproof cover. The 9 lb mattress has a firm infant side and a medium toddler side.

See it on Amazon

Pros

• Lightweight 9 lb design
• Waterproof removable cover
• GREENGUARD Gold certified

Cons

• Width is 27.75 in
• Toddler side is medium rather than soft

The Babyletto Pure Core is best for a lightweight polyester core and a removable waterproof cover. It weighs 9 lb and measures 52 x 27.75 x 5 in.

Its cover combines a soft quilted cotton face with PVC-free waterproof backing. The 2-stage design has a firm infant side and a medium toddler side, so its toddler surface is described differently from models with a soft toddler side.

Babyletto identifies the core as 100% recyclable polyester and says it is free of polyurethane, soy foam, vinyl, PFCs, synthetic latex and dyes. The mattress is GREENGUARD Gold certified.

At 9 lb, this is one of the lighter standard-size options in this roundup. Lighter weight helps with lifting for sheet changes, but crib fit still depends on the 27.75 in width.

The hybrid cover is the practical focus of daily care. The quilted cotton face is the sleep surface, while the PVC-free waterproof backing is meant to protect the core from accidents.

The medium toddler side is a useful detail to note. Some shoppers may prefer a softer toddler face, so this model suits those who are comfortable with a medium description rather than a soft one.

Choose it when a 9 lb mattress and waterproof cover fit your routine. Its 27.75 in width should be checked against your crib before ordering.

How do cover materials affect crib mattress care?

A washable inner core can offer a different cleaning routine from a waterproof cover. Newton Baby's standard and mini models have removable cores that can be rinsed, while Graco, Modera and Babyletto focus on removable covers or protectors.

For Modera, unzip the waterproof protector for machine washing. Graco's cover uses a cold delicate cycle and should hang dry, while Newton Baby advises removing the core, using cool water for hand washing or spot cleaning, and drying thoroughly on low.

Always use the care method for your exact mattress. Do not bleach a Newton core, and do not place the Graco cover in a dryer.

How much does a crib mattress weigh?

The lightest standard-size pick here is Delta Children's Serta Perfect Start at 8.5 lb. Babyletto weighs 9 lb, Newton Essential weighs 11 lb, Graco weighs 12.7 lb, Sealy weighs 14.9 lb, and the Newton Waterproof models weigh 15 lb.

The gap between 8.5 lb and 15 lb is easy to feel when lifting the mattress for sheet changes. Weight often follows construction, with fiber and polyester models lighter and coil and thicker Wovenaire models heavier.

The Newton Mini is 8.4 lb, but its mini-crib dimensions make it unsuitable for standard cribs. Its low weight should not be compared directly with standard models when you are choosing fit.

A lighter mattress may be easier to lift, but crib fit comes first. Always measure the crib interior and confirm the mattress is firm, flat and snug before weighing weight as a deciding factor.

Thickness also affects handling, since 5.5 in and 6 in models are bulkier than the 4 in Newton Essential. If you rarely remove the mattress, construction and cover care may matter more than pounds.

Naturepedic versus other organic crib mattress options

Naturepedic shoppers often compare organic cotton covers, breathable designs and low-emission certifications. Modera has an organic cotton cover, while Newton Baby and Sealy identify GREENGUARD Gold certification.

Those details help narrow the field, but they do not replace a check of construction and fit. A cotton cover, a breathable core and a certification describe different parts of the mattress, so compare each one separately.

Modera is the clearest cotton-cover option here, with an organic cotton cover and a removable waterproof protector. Newton Baby focuses on a washable Wovenaire core, while Sealy pairs a cotton cover with airflow channels and pocketed coils.

That difference matters for care, since a removable cover can be machine washed where stated while a washable core can be rinsed. GREENGUARD Gold relates to low chemical emissions, while CertiPUR-US relates to foam content, emissions and durability.

For another organic cotton comparison, read our guide to the best Naturepedic organic cotton mattress crib. If airflow and washable construction are the main concerns, see our guide to the best organic breathable crib mattress.

Should you choose a mini crib mattress or standard crib mattress?

Choose a standard mattress when the crib requires a surface around 52 x 28 in. Choose the Newton Baby Mini only when your crib requires its 37.75 x 23.75 in mini size.

Mini and standard mattresses are built for different crib interiors, so swapping between them can leave gaps or prevent a proper fit. Measure the inside of the crib in both directions before ordering.

Our mini crib vs bassinet guide can help if you are deciding between a longer-use mini crib and a smaller newborn sleep space. That comparison focuses on the furniture, while this choice focuses on the mattress that fits it.

A mini crib may suit a smaller nursery or bedside setup, but it will be outgrown sooner than a standard crib. Never use the standard-size mattress in a mini crib or the mini model in a standard crib.

Also check thickness for your frame, since a 3 in mini mattress and a 5.5 in or 6 in standard mattress sit very differently. Rely on crib measurements rather than names, as mini, portable and standard are not always used the same way across brands.

Do you need a crib mattress protector?

A protector can add another barrier against spills, but it must fit correctly and preserve a firm, flat sleep surface. Modera includes a removable waterproof protector, while Newton Baby sells an extra breathable waterproof pad as an optional complement.

An included protector is part of the mattress design, while an optional pad is an extra layer you add yourself. In both cases, the layer should lie flat without bunching under the sheet.

A protector can reduce how often the mattress gets wet, but it does not replace washing the cover or core when needed. Spills can still reach seams or edges, so check the surface after an accident.

Fit is the first thing to check, since a protector that is too large can wrinkle and one that is too small can pull tight. Care instructions are the next check, so follow the label rather than assuming all protectors are handled the same way.

If you want a separate layer, compare options in our guide to the best organic crib mattress protector. For families with frequent spills it may add convenience, but for families who already wash the cover and core regularly it may be optional.

Naturepedic versus Newton crib mattresses

Newton is the stronger choice here when a breathable Wovenaire core and washable inner mattress are the deciding features. Sealy is the better fit for pocketed coils, while Modera and Babyletto offer different cover materials and foam or polyester construction.

Read our Naturepedic vs Newton crib mattress comparison for a closer look at those two approaches. If you prefer a different organic brand, our Avocado crib mattress review covers another option.

Final verdict on the best Naturepedic crib mattress alternatives

The Newton Baby Essential is the best overall pick for a breathable, washable standard crib mattress. It combines a Wovenaire core, a washable cotton cover and a 4 in profile for infant-to-toddler use.

Choose Modera for an organic cotton cover and waterproof protector, Sealy for pocketed coils, or Newton Waterproof for a waterproof toddler-side layer. Each alternative leads with a different construction or cover feature.

For a lighter standard mattress, choose Delta Children Serta Perfect Start or Babyletto Pure Core. Their fiber and polyester cores keep weight lower for lifting and sheet changes.

For a mini crib, choose Newton Baby Mini, but confirm the 37.75 x 23.75 in fit before ordering. That mini size will not work in a standard crib, and standard mattresses will not work in a mini crib.

Before you buy any of these picks, measure your crib interior. Size, firmness stage, cover care and weight should all line up with how you plan to use the mattress.

If washable care is your top priority, the Newton models have the clearest rinseable core design. If a waterproof cover is more important, Graco, Modera and Babyletto offer different removable-cover approaches.

Use the verdict as a shortlist, not a final order. Confirm the exact dimensions, color and care steps for the model you choose, since small differences between versions can affect fit and cleaning.

Our top 3 picks at a glance

1. 1
   Best for breathable washable care

   Newton Baby Essential Crib Mattress

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a cotton-covered dual-side design

   Modera Organic Cotton Covered Dual-Sided Crib Mattress

   9.6/10 our score

   See it on Amazon
3. 3
   Best for coil support and airflow channels

   Sealy Baby Flex Cool 2 Stage Crib

   9.6/10 our score

   See it on Amazon

Frequently asked questions

What is the best Naturepedic crib mattress alternative?

The Newton Baby Essential is the strongest alternative here for breathable, washable care. It has a Wovenaire core, a cotton cover, a 52 x 28 x 4 in size and infant-to-toddler use.

Choose Modera for an organic cotton cover and waterproof protector, or Sealy for pocketed coils and a PVC-free waterproof barrier.

What should you compare in a Naturepedic crib mattress?

Compare crib fit, construction, firmness stages, cover material, waterproof protection, weight and cleaning steps. Standard models here range from 8.5 to 15 lb, while the Newton mini model measures 37.75 x 23.75 x 3 in.

Check your crib's required mattress dimensions before choosing.

Are these crib mattresses washable?

The Newton Baby models here have washable covers and removable cores that can be rinsed clean. Modera has a removable waterproof protector for machine washing, while Graco and Babyletto have removable covers.

Follow each cover's care instructions, including drying directions.

Do these mattresses fit toddler beds?

The Newton Baby standard models, Modera, Sealy, Graco, Delta Children and Babyletto describe infant-to-toddler or dual-sided use. The Newton mini model is for mini or portable cribs and is not for standard cribs.

Use the infant or toddler side only as directed for the specific mattress.