Sealy Soybean Natural Rest is our best-selling baby crib mattress featuring a natural soybean foam-core for extra-support. Lightweight and hypo-allergenic, the baby mattress offers a breathable and soft cotton cover that is waterproof and stain-resistant for easy cleaning. Firm and lightweight, this crib mattress is made with natural and renewable soybean oils and square corners for a snug fit. Measures 51.6 x 27.2 x 5 and fits both USA standard size cribs and toddler beds. Sealy is the leader in sleep technology and the best-selling crib mattress brand in North America and proudly supports infants and toddlers with industry-leading crib mattresses known for safety, quality, comfort and premium support. This crib mattress passes all the latest ASTM crib mattress standards including proper crib fit. Meets the Childrens Safe Products Act and Chemicals of High Concern to Children regulations as introduced by states like Washington and Vermont, among others. Pass CPSIA testing for lead and phthalates and each component is air quality tested for a healthier indoor environment. This mattress is GREENGUARD Gold Certified, tested for harmful chemical emissions at an independent laboratory. Sealy crib mattresses are made in the USA and backed with a Lifetime warranty on all workmanship and materials. Use for infants and toddlers approximately 0-5 years.