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Newton Baby Crib Mattress & Toddler Bed, Breathable & Washable (Original 5.5")
Crib Mattresses

Newton Baby Newton Crib Mattress (Original, 5.5 in, White)

#4 · Best Fully Washable & Breathable
7.7 /10 Our score
Lowest verified price $299.99 Amazon
Our verdict
Best for parents who value airflow and easy full cleaning. Buy from a seller that honors the trial if you can, and add a waterproof protector.

Pros

  • Core and cover both washable
  • Very breathable, about 90% air
  • Light at about 13.8 lb
  • GREENGUARD Gold certified
  • Top-ranked by several reviewers

Cons

  • Cover is water-resistant, not waterproof
  • Not truly dual-firmness
  • 2020 lab finding of a flame retardant in an earlier core
  • Sits at the $300 cap on Amazon

Disclosure: We may earn a commission when you purchase through links on this page. This does not affect our editorial rankings.

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Last reviewed November 11, 2026
Review

What to know about Newton Baby Newton Crib Mattress (Original, 5.5 in, White)

Lightweight crib mattress with no foam. Its Wovenaire core is about 90% air and 10% food-grade polymer, and both the core and the zip-off cover are washable. It is the top pick at Babylist and Mommyhood101, and BabyGearLab's Best Washable pick. It suits parents who want breathability and easy full cleaning at the top of the $300 budget.
Editorial notes

Why it stands out

Why we like it

This is the easiest mattress to clean fully. Babylist reports no foam, glue or springs, and testers praise the airflow. At about 13.8 lb it is light, and it is GREENGUARD Gold certified. Babylist and Mommyhood101 rank it first, and BabyGearLab names it Best Washable.

In a 2020 lab test, the Ecology Center found Newton's disclosure matched its analysis, though it detected a phosphorus-based flame retardant in the core of the model it tested. Newton now describes a viscose barrier layer and says it uses no chemical flame retardants.

What to know

Skip it if you need a waterproof surface. The cover is water-resistant only, so plan on a protector. The Amazon offer is from a third-party seller, and the 100-night trial applies only to purchases from Newton's site.
Performance

Score breakdown

Materials & Chemical Safety

What the baby breathes and touches. Rewards no polyurethane foam, no vinyl/PVC, no added chemical flame retardants, no PFAS/antimicrobial treatments, food-grade or organic materials, and low tested odor/VOCs.

7.5
No PU foam; an unresolved 2020 lab finding of an FR.
Certifications & Transparency

Strength of third-party verification (GREENGUARD Gold, GOTS/GOLS, MADE SAFE, EWG Verified, UL Formaldehyde Free) and full public material disclosure.

7.6
GREENGUARD Gold; disclosure verified by the Ecology Center.
Safety: Firmness & Crib Fit

Firm, flat infant surface, edge support, and snug fit in standard cribs, as measured by independent testers.

8.0
Firm; the sides barely differ (Mommyhood101).
Cleanability & Waterproofing

Waterproof vs water-resistant surface, removable machine-washable cover or core, and stain resistance in testing.

8.0
Fully washable but not waterproof.
Weight & Ease of Use

Mattress weight and ease of sheet changes; breathability and airflow claims backed by evidence.

8.6
Very breathable; 13.8 lb.
Durability, Warranty & Trial

Construction durability, dual-stage longevity, warranty length and sleep trial or return policy.

7.8
Recyclable core; trial only when bought direct.
Value

Real street price under $300 relative to materials, certifications and performance.

6.8
$299.99 at the cap, with no waterproofing.
Specifications

Newton Baby Newton Crib Mattress (Original, 5.5 in, White) specs

Materials

Core material
Wovenaire food-grade polymer (about 90% air)
Cover / surface material
Polyester knit, removable and washable
Polyurethane-foam-free
Yes
Flammability approach
Viscose barrier layer; Newton says it uses no chemical fire retardants

Certifications

GREENGUARD Gold certified
Yes

Features

Waterproof surface
No
Dual-sided (infant/toddler)
No
Removable washable cover/pad
Yes

Dimensions

Weight
13.8 lb
Thickness
5.5 in
Shopping

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Disclosure: We may earn a commission when you purchase through links on this page. This does not affect our editorial rankings.

Prices and availability may change. The retailer's price and availability at checkout govern the transaction.

RetailerPriceAvailability
AmazonLowest $299.99 $375.00 In Stock View deal
Lowest verified price $299.99
30-day low $299.99
90-day average $299.99
90-day low $299.99

Based on 2 retailer price observations captured during the last 90 days.

More coverage

Guides featuring Newton Baby Newton Crib Mattress (Original, 5.5 in, White)

The Best Non-Toxic Crib Mattresses Under $300 of 2026 Best Fully Washable & Breathable · #4
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