Foster healthy sleep with a non-toxic, dual-sided PURE Core crib mattress and our waterproof, quilted HYBRID cover. Combining two covers into one, the Hybrid cover protects your crib mattress with a non-vinyl waterproof backing and features a soft cotton face for baby's comfort. Free of polyurethane foam, foam, vinyl, PVC, chemical flame retardants, dyes, allergens, phthalates, PFCs, synthetic latex, and off-gassing materials. Pure Core Dry Organic Mini Mattress materials Outer layer Cotton/Polyester, Batting 80% Modacrylic, 20% Polyester Fiber, Inner Polyester , Cover materials Face 100% Organic Cotton, Filling 100% Polyester, Middle Layer 100% Organic Cotton, Backing 100% Food-grade polyethylene Pure Core Dry Organic mini mattress includes a firm polyester core with a waterproof organic surface sized perfectly for mini cribs Free of glues, dyes, chemical flame retardants, foam, vinyl, allergens, phthalates, PFCs, synthetic latex, animal by-products or off-gassing materials. Dust mite and allergen resistant. Naturally flame retardant exceeds Flammability Standards 16 CFR parts 1632, 1633 without the use of chemical flame retardants and Tested for Safety Meets federal requirements of the CPS Improvement Act of 2008 and HR 4040, and is well within the federal requirements for Lead and Phthalate limits . Sized for standard mini cribs only Pure Core Dry Organic Mini Mattress Care Do Not bend mattress or place in the washer or dryer Designed in California, Sustainably crafted in AsiaOverall Dimensions 40.25 L x 25 W x 4 H Item Weight 8 lbs.