Newton Baby Waterproof Crib Mattress
The Newton Baby Waterproof Crib Mattress weighs 14 lb and is 5.5 in thick, per Newton Baby. Same airy core as the Original with a waterproof barrier on the toddler side of the cover.
- $349.99List price
- 5.5 inThickness
- 14 lbWeight
- PolymerCore
How the Waterproof Crib Mattress stacks up
Against the 82 two-stage crib mattresses we track. The shaded band is where the middle half of them fall; the dot is this one.
Within the typical range for two-stage crib mattresses (7.5 lb to 14 lb).
Within the typical range for two-stage crib mattresses (5 in to 6 in).
Above the typical range for two-stage crib mattresses ($89.99 to $189.99).
What sets the Waterproof Crib Mattress apart
Measured against the 82 two-stage crib mattresses we compare, from each maker's published specs.
- Weight: 14 lbin the middle half of the 69 two-stage crib mattresses that publish it (7.5 lb to 14 lb)
Next to its closest matches
- Newton Baby Original Crib MattressNext to it, the Waterproof Crib Mattress is $50 more; has waterproof (the Original Crib Mattress doesn't).
- Naturepedic Breathable Organic 2-Stage Baby Crib MattressNext to it, the Waterproof Crib Mattress is 0.5 in thinner; $19 less.
- Saatva Crib MattressNext to it, the Waterproof Crib Mattress is 4 lb lighter; 0.5 in thinner.
Fit check
| Size, per the maker | 52 × 28 × 5.5 in |
|---|---|
| Sides | Two-stage, per the maker |
Crib types on Cribpicks that take a full-size crib mattress:
Listed features
- Waterproof TPU barrier on toddler side
- Washable cover and core
- Two-stage
Worth checking
- Highest price in the Newton crib line
- Waterproofing is on the toddler side only
Where to buy the Waterproof Crib Mattress
Prices and availability change. We may earn a commission from some links.
- Check for recalls: Search the agency's recall list with the model number and date code from the label: CPSC recall search.
- Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
Full specs
| Newton Baby Waterproof Crib Mattress | |
|---|---|
| Type | Two-stage crib mattress |
| List price | $349.99 |
| Size | 52 × 28 × 5.5 in |
| Thickness | 5.5 in |
| Weight | 14 lb |
| Core | Polymer: Wovenaire core, 90% air and 10% food-grade polymer (per the maker) |
| Two-stage | Yes, infant and toddler sides |
| Waterproof | Yes |
| Washable cover | Yes |
| Breathable design | Yes, per the maker |
| Certifications | GREENGUARD Gold |
| Federal standard | Maker says it meets it |
| Warranty | Core: limited lifetime; cover and encasement: limited 2-year |
| Trial | 100 nights |
Compare the Waterproof Crib Mattress with
How each closest rival differs from the Waterproof Crib Mattress, from the makers' specs.
- Newton BabyOriginal Crib Mattress14 lb5.5 in thick$299.99
- $50 less
- NaturepedicBreathable Organic 2-Stage Baby Crib Mattress14 lb6 in thick$369
- 0.5 in thicker
- $19 more
- SaatvaCrib Mattress18 lb6 in thick$359
- 4 lb heavier
- 0.5 in thicker
- $9 more
- OeufDual Firm Crib Mattress 6"6 in thick$325$325
- 0.5 in thicker
- $25 less
Waterproof Crib Mattress: questions answered
From Newton Baby's published specs, last checked 2026-11-02.
Will the Newton Baby Waterproof Crib Mattress fit my crib?
The maker lists it at 52 × 28 × 5.5 in, a full-size crib mattress. Check that the mattress size matches what your crib's maker specifies. Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
How does a two-stage mattress like the Newton Baby Waterproof Crib Mattress work?
One side is firmer for infants and the other is softer for toddlers. Follow the maker's instructions on when to switch sides. Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
What is the Newton Baby Waterproof Crib Mattress made of?
Wovenaire core, 90% air and 10% food-grade polymer (per the maker). The maker lists GREENGUARD Gold. It weighs 14 lb, which matters when you change sheets.
Is the Newton Baby Waterproof Crib Mattress waterproof or washable?
The maker says it has a waterproof surface or cover. It has a removable, machine-washable cover.
What's the difference between the Newton Baby Waterproof Crib Mattress and the Newton Baby Original Crib Mattress?
By the maker specs, the Original Crib Mattress lists for $50 less. See them side by side.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
More two-stage crib mattresses
- Newton BabyEssential Waterproof Crib Mattress13 lb4 in thick$249.99
- Delta ChildrenIonic Breathe Crib and Toddler Mattress with Cloud Core16.6 lb5.3 in thick$399.99
- babyletto x AvocadoDual-Stage Organic Crib Mattress23 lb5.5 in thick$359
- Lullaby EarthBreathe Safe Breathable Crib Mattress 2-Stage6 in thick$299$299
- Moonlight SlumberChill Baby Crib Mattress6 in thick$289$289.99
- Simmons Kids / Beautyrest BlackBlack AIRCOOL Two-Stage21 lb6 in thick$299.99
Where these specs come from
Last checked 2026-11-02. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.