Best Firm Toddler Mattresses in 2026

USA-MADE EXTRA FIRM COILS: Perfect Rest baby crib mattress consists of 150 durable, posture-supportive coils made in the USA. Resilient coils help create a firm foundation while the steel edges support your little one throughout the entire crib mattress

WATERPROOF PROTECTION: Waterproof mattress protector has a 100% waterproof barrier to protect against leaky messes while mattress is reinforced with lock-stitched waterproof binding that resists stains, odors, and moisture

SUPPORTIVE & COMFY: Standard size crib mattress is made of substantial coils and airy cushioning to cradle baby while mattress pad for crib features quilted, hypoallergenic filling topped with a cotton poly blend knit for extra softness

LIGHTWEIGHT SOYBEAN FOAM-CORE -- Lightweight, soy based foam-core offers improved durability over conventional foams and uses renewable resources resulting in the use of less crude oils

PREMIUM FOAM -- The foam used throughout is CertiPur-US Certified foam made in the USA. It is made without phthalates, lead, mercury, formaldehyde, PBDES, TDCPP or TCEP flame retardants that may be a concern in non-certified foams. Cover is wet-resistant

WATERPROOF SURFACE & BINDING -- Reinforced embossed waterproof and stain-resistant cover with lock-stitched binding helps to keep liquids from seeping inside. Wipes clean easily

204 PREMIUM COILS -- High coil count orthopedic crib mattress with 204 durability-tested coils for premium firmness. Anti-sag steel vertical bars evenly distribute baby's weight to keep infants supported.

AIRY 2-STAGE DESIGN -- 2-sided dual firmness mattress offers a firmer infant side and a softer toddler side. A light layer flexes under baby's body weight and contours to baby's body for support.

WATERPROOF SURFACE & BINDING -- Soft cotton, PVC-free cover is breathable, while a waterproof barrier lining helps prevent liquids from seeping inside that can cause mold, mildew, and odor.

2-STAGE DESIGN: Firmer infant side made from high-density soy-enhanced foam. Sealy mattresses are tagged with a firmer infant side and softer comfort side for toddlers on the tag.

WATERPROOF & STAIN RESISTANT: Cool-Tex waterproof and stain-resistant fabric cover for luxury and comfort for the best nights sleep.

COOL & BREATHABLE: Exclusive infused soybean cool gel memory foam technology creates a cooler feeling top layer that absorbs baby's movement and responds with increased comfort. Lock-stitched binding will not unravel and won't trap liquids and odors.

2-STAGE FIRMNESS -- The Sealy Posture Perfect Hybrid 2-Stage crib mattress is the best of both a dependable innerspring plus the comfort of soybean memory foam combined into one baby mattress with a grow-with-me infant to toddler design. Sealy mattresses are tagged with a firmer infant side and softer comfort side for toddlers on the tag.

SUPPORT LAYERS -- Two support layers cushion and comfort baby while providing a supportive sleeping surface. An airy cotton wrap creates cozy comfort for your little one.

WATERPROOF COVER -- The waterproof cover and lock-stitched waterproof binding . The entire mattress wipes clean with a damp cloth

AMERICA’S #1 CRIB MATTRESS BRAND: Sealy Baby crib mattresses are America's best-selling brand because the quality, safety and parent-tested and trusted Designs far exceed any other

DURABLE & FIRM FOAM: The Sealy Butterfly crib and toddler mattress collection is made with CertiPUR-US certified foams that are firm and supportive

100% WATERPROOF PROTECTION: Features a waterproof barrier to keep leaky messes from seeping into the mattress. Designed with a waterproof barrier to help protect against odors

AMERICA’S #1 CRIB MATTRESS BRAND -- Sealy baby crib mattresses are America’s best-selling brand because the quality, safety and parent-tested and trusted designs far exceed any other.

DURABLE & NON-TOXIC AMERICAN MADE FOAM -- The Sealy Butterfly Crib and Toddler Mattress collection is made with CERTIPUR-US Certified foams that firm, supportive and non-toxic.

100% WATERPROOF PROTECTION -- The Sealy Butterfly comes with a waterproof barrier to keep leaky messes from seeping into the mattress. Designed with a waterproof barrier.

DUAL FIRMNESS -- Features a two-stage design with firmer infant side and a softer toddler side - just flip the mattress over for a soybean cool gel memory foam topper for cool comfort for infants or toddlers.

SPRING-FREE FOAM CRIB MATTRESS -- Offers lightweight spring-free luxury with an all-foam crib mattress made with soybean cool gel memory foam and a firm hypoallergenic core.

LIGHTWEIGHT DESIGN -- A firm and lightweight hypoallergenic core creates firmness perfect for infants and newborns. This mattress weighs less than 12 pounds to easily lift and change crib sheets and mattress pads.

AMERICA'S #1 CRIB MATTRESS BRAND: Sealy Baby crib mattresses are America's best-selling brand because the quality, safety and parent-tested and trusted Designs far exceed any other.

CRIB MATTRESS - DURABLE & NON-TOXIC FOAM: The Sealy Butterfly crib and toddler mattress collection is made with CertiPUR-US certified foams that are firm, supportive and non-toxic

CRIB MATTRESS - 100% WATERPROOF PROTECTION: Features a waterproof barrier to keep leaky messes from seeping into the mattress. Designed with a waterproof barrier to help protect against mold, mildew and odors

POSTUREPEDIC ADVANCED ZONED SUPPORT -- Legendary Posturepedic zoned support grows with your child's needs with targeted areas of support and comfort.

PREMIUM AMERICAN-MADE POSTURE COILS -- 204 premium steel innerspring engineered in the USA for a lifetime of support Plus a steel support frame and 10 Ever edge Guards all around for added safety and lasting durability.

COTTON WATERPROOF COVER -- Breathable cotton fabric is gentle on baby's skin while a waterproof barrier keeps the mattress protected against leaky messes and odors.

POSTUREPEDIC ADVANCED ZONE SUPPORT: Legendary Posturepedic zoned support grows with your child's needs with targeted areas of support and comfort

PREMIUM AMERICAN-MADE POSTURE COILS AND FOAM: Hybrid design with family-friendly soybean memory foam plus 204 premium steel innerspring engineered in the USA for a lifetime of support

COTTON WATERPROOF COVER: Breathable cotton fabric is gentle on baby's skin while a waterproof barrier keeps the mattress protected against leaky messes

HYBRID DESIGN -- Hybrid design featuring both coils, foam, and natural touches for superior support and comfort throughout. 204 premium steel coil system that creates ultimate firmness for toddlers. Sealy mattresses are tagged with a firmer infant side and softer comfort side for toddlers on the tag

SOFT COTTON COVER -- Luxurious cotton cover that is breathable on baby’s skin with a waterproof barrier is designed underneath the cotton cover, pvc-free mattress

2-STAGE FIRMNESS -- On the infant side, a luxurious organic cotton and firm layer provide comfort and stability. The toddler side features a soybean memory foam layer for comfort.

2-STAGE DESIGN -- Best-in-class lightweight 2-stage dual firmness grow-with-me crib mattress features our CooLuxe soybean cool gel memory foam that offers an ultra-firm foam core creating a safe, flat surface for newborns and infants.

COOL & BREATHABLE -- Elegant and durable cotton fabric cover is airy and breathable on baby’s skin. Waterproof and allergy barrier keeps liquids from seeping inside. Cotton wrap for added comfort and protection.

FAMILY-FRIENDLY FOAM -- Features American-made CertiPUR-US certified foam. Certified foams are made without PBDE fire retardants, lead, mercury, prohibited phthalates and other potentially harmful materials.

2-STAGE DUAL FIRMNESS DESIGN: Best-in-class lightweight 2-stage dual firmness grow-with-me crib mattress features our CooLuxe soybean cool gel memory foam that offers an ultra-firm foam core creating a safe, flat surface for newborns and infants

COOL AND BREATHABLE: Elegant and durable cotton fabric cover is airy and breathable on babys skin. Waterproof and allergy barrier keeps liquids from seeping inside. Cotton wrap for added comfort and protection.

FAMILY FRIENDLY FOAM: Features American-made CertiPUR-US certified foam. Certified foams are made without PBDE fire retardants, lead, mercury, prohibited phthalates and other potentially harmful materials.

2-STAGE COIL & FOAM DESIGN – Firmer infant side made with a 204 posture supportive coil system and hypoallergenic cushioning and softer toddler side features a soybean cool gel memory foam layer that helps create a cozy cool environment. Sealy mattresses are tagged with a firmer infant side and softer comfort side for toddlers on the tag.

INNOVATIVE SUPPORT UPGRADES -- Thick 6-gauge steel border secures edges just like an adult mattress, exclusive EverEdge corner and side protectors for key areas and an anti-sag weight distribution system helps distribute baby’s weight evenly.

COTTON COVER WITH WATERPROOF SURFACE -- Soft cotton cover is PVC-free and offers a waterproof barrier to keep the mattress clean inside and out.

SEALY IS AMERICA’S #1 CRIB MATTRESS BRAND -- More babies sleep on a Sealy than any other crib mattress brand in the USA, with premium safety, quality, and family-tested and trusted designs.

PREMIUM FOAM ROLLS OUT FLAT -- Delivered to your doorstep in a lightweight, easy-to-carry box for ultimate convenience. Simply open and your baby's mattress "butterflies" out and takes shape to fit cribs and toddler beds, expanding fully within 48 hours.

2-STAGE INFANT & TODDLER GROW-WITH-ME DESIGN -- A firmer infant high density foam side (identified on the foam) and a more comfortable soybean memory foam side for optimal coziness for toddlers.

PREMIUM SAFETY: Crib Mattress is GREENGUARD GOLD Air Quality Certified for over 10,000 chemicals and VOCs creating a healthier indoor nursery. CPSIA Certified. Passes Chemicals of High Concern to Children regulations for added safety!

BREATHABLE MESH AND ANTIBACTERIAL SURFACES: 2-Stage waterproof cover with rayon from bamboo silky mesh for breathability on baby's skin on the infant side and a hospital-grade antibacterial surface on the toddler side helps prohibits bacterial growth.

FIRM 2-STAGE BABY MATTRESS: Passes ASTM and federal safety standards to ensure proper crib fit and firmness to help reduce the risk of suffocation. Firmer infant side flips to toddler mattress with a cozy side. Measures 52x28x6 inches for snug crib fit

SEALY IS AMERICAS #1 CRIB MATTRESS BRAND: More babies sleep on a Sealy than any other crib mattress brand in the USA, with premium safety, quality, and family-tested and trusted designs

PREMIUM FOAM ROLLS OUT FLAT: Delivered to your doorstep in a lightweight, easy-to-carry box for ultimate convenience. Simply open and your baby's mattress "butterflies" out and takes shape to fit cribs and toddler beds, expanding fully within 48 hours

2-STAGE INFANT AND TODDLER DUAL FIRMNESS DESIGN: A firmer infant high density foam side (identified on the foam) and a more comfortable soybean memory foam side for optimal coziness for toddlers

SEALY IS AMERICA’S #1 CRIB MATTRESS BRAND -- More babies sleep on a Sealy than any other crib mattress brand in the USA, with premium safety, quality, and family-tested and trusted designs.

PREMIUM FOAM ROLLS OUT FLAT -- Delivered to your doorstep in a lightweight, easy-to-carry box for ultimate convenience. Simply open and your baby's mattress "butterflies" out and takes shape to fit cribs and toddler beds, expanding fully within 48 hours.

2-STAGE INFANT & TODDLER GROW-WITH-ME DESIGN -- A firmer infant high density foam side (identified on the foam) and a more comfortable soybean memory foam side for optimal coziness for toddlers.

PREMIUM SAFETY: Crib Mattress is GREENGUARD GOLD Air Quality Certified for over 10,000 chemicals and VOCs creating a healthier indoor nursery. CPSIA Certified. Passes Chemicals of High Concern to Children regulations for added safety!

NATURAL AND SUSTAINABLE COVER: GOTS Certified organic cotton and sustainable fabric baby mattress cover for natural breathability. Waterproof barrier protects crib mattress, pvc-free. Waterproof binding and an airflow pocket allows the mattress to breathe

AIRY COMFORT & EXTRA FIRM: 2-Stage firmer infant side support, cozy toddler mattress comfort. Firmness tested to help reduce the risk of suffocation. Cotton layers and sustainable fibers made in the USA. Fits all standard cribs and toddler beds.

PREMIUM SAFETY: Crib Mattress is GREENGUARD GOLD Air Quality Certified for over 10,000 chemicals and VOCs creating a healthier indoor nursery. CPSIA Certified. Passes Chemicals of High Concern to Children regulations for added safety!

HOSPITAL-GRADE WATERPROOF COVER: Staph-Gard antibacterial surface prevents the spread of bacteria on baby's mattress. 100% waterproof, wipe clean cover. Tear-resistant, stain-resistant, pearl embossed strong and durable cover. Infant side is tagged.

FIRM 2-STAGE BABY MATTRESS: Passes ASTM and federal safety standards to ensure proper crib fit and firmness to help reduce the risk of suffocation. Firmer infant side flips to toddler mattress with a cozy side. Measures 52x28x6 inches for snug crib fit.

2-Stage Dual Firm Crib Mattress

RAYON COVER MADE FROM BAMBOO & WATERPROOF BARRIER- Zip-off washable cover made with a breathable knit material. Soft and silky on baby's skin. A waterproof barrier barrier will keep the inside of the mattress fresh and free of liquids.

STAIN REPEL AND RELEASE TECHNOLOGY: Stain repel and release technology protects crib mattresses from stains and allows them to easily wash away from the pad

ANTIMICROBIAL PROTECTION: Antimicrobial pad protection inhibits growth of bacteria and neutralizes odors for freshness in between washes

WATERPROOF PROTECTION: Waterproof barrier offers moisture protection from diaper leaks, spills and other messes. Machine washable and dryer friendly