The Best Crib Mattresses

The washable core is the reason to buy it. Every other mattress here gives you a wipeable surface. Newton gives you a mattress you can rinse in the shower. Peel off the cover, machine wash it, rinse the core, let both dry. That matters more than it sounds when a stomach bug hits at 2 a.m. and the mess soaks well past the sheet.

The core, which Newton calls Wovenaire, is a loose weave of food-grade polymer that the company says is about 90 percent air. Press your hand into it and it pushes back firmly, then springs flat again. Newton's claim is that a baby who ends up face-down can still move air through it. Treat that as a design goal rather than a guarantee, and keep the crib bare anyway.

GREENGUARD Gold is the certification that actually matters here, and this mattress has it. That program sets emissions limits calibrated for infants and children, not adults. It doesn't tell you a mattress is organic, and it doesn't tell you it's firm. It tells you what comes off the surface into the air of a small closed room. For something your baby breathes against all night, that's the useful check.

It's a two-stage mattress, so one side supports a newborn and the other is meant for a toddler. At 11 pounds it isn't the lightest option here, but the core has enough structure that you can grab a corner and pull a fitted sheet on without wrestling it. It measures 52 by 28 inches, the standard full-size footprint, so it drops into a standard crib snugly.

Flaws but not dealbreakers

It's the most expensive mattress here by a wide margin. You're paying for the washable core, and if you'd rather buy a cheap waterproof pad and call it done, that math won't work for you.

The core has an open, springy feel that some parents find odd at first, and it doesn't sit dead flat under your palm the way a dense foam slab does. It runs 5.5 inches thick, so check that your crib sheets have deep enough pockets. And washing the core is a project, not a two-minute job — plan on a rinse and a long dry.

Flip it over and you get a different mattress. The infant side is firm the way safe-sleep guidance asks for, closer to a packed gym mat than a bed. The toddler side has a bit more give, which is what a two-year-old who's been sleeping on it for a while will actually notice. One mattress, two stages, crib through toddler bed.

The cover is the part parents keep praising. It's a medical-grade waterproof laminate, hypoallergenic, and you clean it with a damp cloth and mild soap. No zipper to fight, no cover to launder, no seams for milk to seep into. When a diaper fails at 4 a.m., you strip the sheet, wipe the surface, and you're back in bed in two minutes.

It's built on CertiPUR-US foam and carries GREENGUARD Gold certification. That means the foam is made without PBDE flame retardants, formaldehyde, mercury or lead, and the finished mattress has been screened for emissions by an outside lab. If your worry list starts with off-gassing, that pair of marks covers most of it.

At 10.8 pounds it weighs about the same as our top pick, and it's a hair under 28 by 52 inches, the standard footprint. Practically, that means it sits in a full-size crib without the gaps that make you nervous. Slide it in and run two fingers down the edge. You shouldn't be able to fit more than that.

Flaws but not dealbreakers

There's no washable component. The surface wipes clean, but anything that gets past the cover stays inside the mattress for good.

It's solid foam, so it doesn't move air the way our top pick's core is designed to. It's also heavy enough that lifting it out of a crib one-handed becomes a two-hand job for most people. And some parents find the toddler side barely softer than the infant side, which makes the flip feel more symbolic than useful.

Moonlight Slumber backs the Little Dreamer with a product lifetime warranty.

This is the mattress most parents actually buy, and there's a reason. It hits the marks that matter — GREENGUARD Gold certification, CertiPUR-US foam, an OEKO-TEX Standard 100 cover, formaldehyde-free validation from UL — and then stops. No breathable core, no organic wool, no dual-stage story. If your budget is going toward the crib and the car seat, this is a sensible place to save.

The removable cover is the practical win. It unzips and goes in the washing machine on cold, which most mattresses in this lineup won't allow at all. Underneath, the surface is waterproof, so a leak that soaks the sheet doesn't reach the foam. Follow the care instructions closely, though: cold delicate cycle, no bleach, hang to dry, and keep it out of the dryer.

At 10.5 pounds it sits in the middle of the pack, and it measures roughly 52 by 27.6 inches with a 5-inch profile. That's the standard footprint, so it fits full-size cribs and carries over to a toddler bed later. For twins, two of these still cost less than one of the premium mattresses here.

Flaws but not dealbreakers

Foam is foam. It doesn't move air the way the Newton core is built to, and it'll hold a dent if you leave something heavy on it. The cover is machine washable but can't go in the dryer, which turns a middle-of-the-night mess into a next-day problem.

Despite the crib-and-toddler name, it's a single-firmness mattress, so there's no side to flip to. And budget foam is more likely to soften over three years of nightly use. Watch for a dip in the middle before you hand it down to a second child.

Innerspring mattresses hold their shape differently than foam. The 204 continuous coils, border wire and corner pillars keep the perimeter firm, and the perimeter is the part of a crib mattress that usually goes soft first. If you've seen an old foam mattress sag along the edge where a toddler climbs in, that's the failure this design fights.

It's a two-stage mattress with an extra-firm infant side and a more forgiving toddler side, made in the USA by a family-owned company. The medical-grade waterproof cover blocks moisture, stains and odors, and it wipes down in seconds. GREENGUARD Gold certification handles the emissions question, and the mattress is built to ASTM standards.

The surprise is the weight. At about 7.5 pounds this is the lightest of our picks, and it's the innerspring — usually the heavy category. Coil crib mattresses often run past 12 pounds, and that's the difference between changing a sheet one-handed and needing both arms. If you're doing this half asleep, the gap is real.

It measures 51.63 by 27.25 inches, which sits at the small end of the standard range. That's fine in a standard crib, but measure your crib's interior before you order. A snug fit is a safety requirement, not a preference, and you shouldn't be able to slide more than two fingers between the mattress and the frame.

Flaws but not dealbreakers

Coils make noise. It's a small squeak rather than a groan, but a light sleeper who stirs when you lower them in may notice it more than they would on foam.

The 51.63-inch length is shorter than several mattresses here, so a crib that runs long can leave you with more gap than you want at the head or foot. Check it with two fingers before the first night. And nothing here comes apart for washing — the cover wipes, and that's the extent of it.