About This Dual Firmness Crib Mattress – 2-Stage baby mattress features a firm infant side to support newborns and a softer toddler side for comfort. Meets ASTM, CPSIA, and federal safety standards. Measures 52x28x6 inches for a safe, snug fit in standard cribs. Waterproof & Antibacterial Baby Mattress – Hospital-grade Staph-Gard cover resists bacteria, stains, and odors. 100% waterproof, pearl-embossed surface wipes clean easily and withstands wear and tear. Infant side is clearly labeled for ease of use. Safe & Supportive 2-Stage Crib Mattress – Firm and flat infant side promotes safe sleep and reduces suffocation risk. Flip to the plush toddler side as your child grows. 52”x28”x6” size fits all standard full-size baby cribs securely. Eco-Friendly Lightweight Crib Mattress – USA-made sustainable fiber core is non-toxic, durable, and supportive. Weighs only 8 lbs for easy sheet changes. Earth-friendlier baby mattress design promotes a healthier nursery with safety and comfort. Made in USA Baby Mattress – Sealy is America’s #1 trusted brand for baby crib mattresses. Built to last with a lifetime warranty on materials and craftsmanship. Square corners ensure a snug, secure fit in standard-size cribs and toddler beds. Overview Brand : SEALY BABY Size : Crib Product Dimensions : 52"L x 28"W x 6"Th Item Weight : 8.25 Pounds Item Firmness Description : Firm Top Style : Tight Top Cover Material : Polyester or Polyester Blend Number of Layers : 2 Fill Material : Polyfoam Special Feature : Breathable, Double Sided, Durable, Hypoallergenic, Lightweight, Water Resistant