Crib mattresses compared by what is inside
Five ways a crib mattress is built, what each leaves out, and what the federal rule does and does not tell you. Pick the build first, then check the paperwork.
The federal crib mattress rule is about fit and construction, so it will not tell you what the mattress is made of or what it gives off. Choose the build you are comfortable with, read which part each certificate covers, air the mattress for several days, and keep the crib bare.
Common crib mattress mistakes
- Reading "organic" as the whole mattress — It can describe the cotton cover and say nothing about the core, the adhesives or the fire barrier. Ask which part each claim covers.
- Adding a pillow, blanket or soft topper — CPSC's safe-sleep guidance is "Bare is Best": nothing but a fitted sheet in the crib. A softer surface is not a comfort upgrade for a baby.
- Using it straight out of the wrapper — Emissions are highest when a mattress is new and fall off over the following weeks. Unwrap it in a ventilated room several days before the first night.
Five crib mattress builds, side by side
Each build trades price, materials and certifications differently. Tap a build to see the models we have listed. The certifications are the makers' claims unless we say a register confirms them.
- Type 1Organic cotton over a polyethylene or coil coreOrganic cotton cover, a polyethylene waterproof surface, and a coil or polyethylene-foam core, and on one line comfort layers the maker describes as organic latex foam.3 picks · $279–$459
- Type 2Organic latex, wool and coil hybridOrganic cotton, wool, natural latex and coconut fiber over innerspring coils.1 pick · $599
- Type 3Polyester-fiber core, no polyurethane foamA polyester-fiber core with a waterproof cover, in conventional materials.3 picks · $119–$249
- Type 4Washable air-core mattressA polymer-fiber core the maker calls 90% air, with a machine-washable cover.1 pick · $200
- Type 5Polyurethane foamA polyurethane foam core, the most common conventional build.1 pick · $100
| Type | Good at | Watch out for | Best for |
|---|---|---|---|
| Organic cotton over a polyethylene or coil core | No polyurethane foam and no vinyl, per the maker. The maker's GOTS certificate is in the GOTS register (Certificate GOTS-15720) and the brand is in MADE SAFE's listing. | Costs several times more than the fiber or foam builds. GREENGUARD Gold is the maker's claim here: we could not search UL's database. Naturepedic's own pages disagree about whether some lines use latex, so ask in writing if latex matters to you. | A buyer who wants the most confirmed paperwork of the builds we list and will pay for it, or a second child who will reuse it. |
| Organic latex, wool and coil hybrid | No polyurethane foam or vinyl per the maker, with wool and latex doing the work foam usually does. | It contains latex and wool, so skip it if either allergy runs in the family. It is among the dearest crib mattresses we list. | A household that wants a natural-materials build and has no latex or wool allergy. |
| Polyester-fiber core, no polyurethane foam | Leaves out polyurethane foam at a lower price (prices read 2026-10-23). The makers display GREENGUARD Gold and say no chemical flame retardants. | Conventional, not organic, and the certifications are manufacturer-displayed claims. One maker lists modacrylic batting, a flame-resistant fiber, without saying which layer is the fire barrier. | A buyer who wants to skip polyurethane foam without the organic price. |
| Washable air-core mattress | The core can be rinsed by hand and the cover machine washed, which helps with spit-up, leaks and a baby who is sick. | The breathability claim is the maker's. We did not find a published test standard behind it, so we record none. | A household that expects a lot of laundry. Breathability claims do not replace a bare crib and back sleeping. |
| Polyurethane foam | Inexpensive and widely sold. The maker of this one displays CertiPUR-US for the foam and GREENGUARD Gold. | Polyurethane foam is a source of volatile organic compounds, highest when new. CertiPUR-US covers the foam only. | A tight budget, with the mattress aired out well before use. |
Type 1Organic cotton over a polyethylene or coil coreOur picks · $279–$459
This is the build we reviewed at length in our Naturepedic review, and the one with the most registry-confirmed paperwork of the five. The two-stage model has a lighter core for the toddler years, and the quilted breathable model is the dearest of the line.
Certifier record checked · source
Our reviewed pick
Organic cotton, a food-grade polyethylene waterproof surface, no PVC and no polyurethane foam core, per Naturepedic's page. GOTS is confirmed for the company (GOTS-15720); MADE SAFE and EWG Verified are confirmed at brand level; GREENGUARD Gold is the maker's claim.
Two-stage, toddler years
A lightweight two-stage build with a polyethylene foam core per the maker's line description. The maker states it meets flammability standards without added flame-retardant chemicals.
Ingredient panel checked · source
Quilted breathable cover
A removable quilted breathable cover over seamless waterproofing the maker says is made without vinyl or PVC, and no polyurethane foam. The maker's page also says its comfort layers use organic latex foam while another table says the line is latex-free, so ask. Our Amazon match is by title and price. The dearest Naturepedic here.
Type 2Organic latex, wool and coil hybridOur picks · $599
A natural-fiber alternative to the polyethylene builds. The maker says organic wool is the fire barrier. It has no waterproof layer of its own, so if you add one, use a thin, snug, fitted crib protector, or nothing.
Avocado Organic Crib Mattress — 2-Stage Infant & Toddler Mattress, GOTS-Certified Organic Cotton & Wool, GOLS-Certified Latex, GREENGUARD Gold Certified, Standard Crib Size 52 x 28 x 6 Inches
Ingredient panel checked · source
Organic latex and wool hybrid
Organic cotton, wool, natural latex and coconut fiber over coils, with no polyurethane foam or vinyl per the maker. Contains latex and wool.
Type 3Polyester-fiber core, no polyurethane foamOur picks · $119–$249
The cheapest way we found to skip polyurethane foam. Treat the badges as the makers' claims and ask which layer meets the fire rule.
Ingredient panel checked · source
Lowest price without polyurethane foam (as read 2026-10-23)
A high-density polyester-fiber core the maker says is free of polyurethane foam, vinyl and chemical flame retardants, with GREENGUARD Gold displayed by the maker.
Ingredient panel checked · source
Recyclable polyester core
A polyester core with a quilted cotton face and a PVC-free polyethylene-backed cover, GREENGUARD Gold displayed by the maker. It lists modacrylic batting and does not say which layer is the fire barrier.
Ingredient panel checked · source
Breathable cover
A three-dimensional breathable cover over polyethylene waterproofing, with EWG Verified and GREENGUARD Gold displayed by the maker. The maker's breathability claim cites a test by Intertek but publishes no standard or results.
Type 4Washable air-core mattressOur picks · $200
Washability is the selling point. GREENGUARD Gold is displayed by the maker and not checked by us.
Washable air-core
A polymer-fiber core the maker calls 90% air, a machine-washable cover and a core you rinse by hand. GREENGUARD Gold is displayed by the maker.
Type 5Polyurethane foamOur picks · $100
A defensible conventional choice if you read the certification scope and air it out. We did not run a recall search by maker name for every pick here, so check each model number on CPSC's recall list.
A foam option
A polyurethane foam core. Stork Craft, the licensed maker of this Graco-branded mattress, displays CertiPUR-US and GREENGUARD Gold, and an OEKO-TEX label for the cover. In 2015 Stork Craft recalled two Graco-branded foam crib mattresses (models 06710-100 and 06710-200, made August 2014 to January 2015) for failing the federal open-flame standard. No injuries were reported, and the remedy was a free barrier cover. If you are handed a used Graco foam mattress, check the model number on its label against that notice.
A crib mattress is the one purchase a baby is pressed against for most of its sleeping hours. Two questions decide it: what the mattress is made of and what comes out of it into the air. Different certifications answer each. None means "no chemicals". They mean an independent party measured a defined list.
Jump to Compare the five builds · What the federal rule covers · Before the first night
What the federal rule covers, and what it leaves out
Crib mattresses sold in the United States fall under CPSC's mandatory standard at 16 CFR Part 1241. The text we read sets size and fit. A full-size crib mattress must measure at least 27¼ inches wide and 51⅝ inches long. With the test sheet wrapped on, the gap at the crib corner may not exceed 3.15 inches in the standard's test. It also incorporates ASTM F2933-25 for crib mattresses, which we did not read.
So the rule keeps a baby from slipping into a gap. It does not tell you the core is foam or fiber, whether the cover is vinyl, or what the mattress emits. Those answers come from the maker's materials list and from certifiers, each with its own scope. We explain each label in bedding certifications explained.
Fire is separate. Mattresses must also meet federal flammability rules, and a maker can meet them with chemicals or with a physical barrier such as wool. Labels rarely say which. Our mattress toxicity explainer covers what is and is not known about the chemicals involved, and the flame-retardants page covers the wider story.
Before the first night
- Air it out. Unwrap the mattress in a ventilated room several days before the first night. New-product emissions fall off over days to weeks; see VOC off-gassing.
- Keep the crib bare. CPSC's safe-sleep guidance is nothing but a fitted sheet in a crib, bassinet or play yard, and no pillows or blankets in a baby's sleep space.
- A waterproof layer is optional. CPSC's guidance names only a fitted sheet, so if you want one, use one made for a crib that fits snugly and stays flat under the fitted sheet, or skip it. A loose or flat pad does not belong in a crib. The protector guide compares the waterproof layers.
- Check recalls. Search the model number on CPSC's recall list (cpsc.gov/Recalls) or SaferProducts.gov.
The crib mattress cheat sheet ranks these same mattresses by how people buy, and the nursery guide covers the rest of the room.
Vetted picks
Waterproof crib pad (check the style)
Organic cotton the maker lists as GOTS-certified, with a thin TPU waterproof layer made without vinyl, PVC or phthalates, per the maker. The maker sells flat, fitted and oval-fitted styles and we could not confirm which one this listing sells, so check that it says fitted before you buy. A flat pad does not belong in a crib.
Common questions
Cheat sheets for this
Part of the Mattresses & Bedding hub— the rest of our coverage in this category.
Every mattresses & beddingproduct we've reviewed— what we'd buy, what we'd skip, and where each one stands.