From Lullaby Earth, this mattress cover features: The Lullaby Earth Breeze Air Breathable mini crib mattress cover is a washable, waterproof, breathable pad that can be added to the mini crib mattress. It combines a breathable surface and waterproof backing while still being machine washable. The breathable pad provides an airflow layer between the baby and the mattress and enhances breathability when the baby is face down. The Breeze Air is made with a luxurious surface material. Breathable layer between the baby and the mattress Breathable layer is waterproof and removable Full breathability with full hygiene Make any crib mattress breathable Waterproof backing acts as a built-in mattress protector No harmful chemicals and no flame retardants No toxic chemical odors/smells Machine washable GREENGUARD Gold Certified Made Safe certified No vinyl, phthalates, polyurethane foam, flame retardant chemicals or barriers, formaldehyde, pesticides, GMO's, glues/adhesives, etc. Fits Mini crib size approximately 24" x 38" x 3" See www.lullabyearth.com for more information and Lullaby Earth safety awards The Lullaby Earth Breeze Air mattress cover is sewn and finished in the U.S.A. with imported fabric.