DOM1239: Features: -88 coil inner-spring crib and toddler mattress-Designed for comfort and support-Provides a plush sleeping surface and two hypo-allergenic foam insulating layers-A lock-stitch venting system that wipes clean with mild soap and water-Mattress passes the federal standard flammability standard 16 CFR 1633-Made in the USA. Specifications: -88 interwoven steel coils and all-around heavy duty steel perimeter support system.