Waterproof Organic Cotton Cover Features a luxurious organic cotton fabric with a clear 100% polyethylene food-grade waterproof coating. Non-allergenic and easy-to-clean. Organic Cotton Filling Pure, Natural, and chemical-free Firm Support Features Air-Core™, a non-toxic environmentally friendly support layer made from 100% food-grade polyethylene. Air-Core is a network of closed cell air pockets that provide a firm and comfortable base without the toxic properties of polyurethane foam and the allergenic concerns of latex rubber. Fire Protection Exclusive fire protection system features a non-toxic and naturally derived fire barrier system that is safe and effective. It meets and exceeds all Federal and State flammability standards without the use of potentially harmful chemicals. Non-Toxic Design NO Vinyl, PVC, or Phthalates NO Polyurethane Foam NO Latex or Wool (for allergy concerns) Available Sizes: Changing Pad Flat - 16" x 32" x 1" Changing Pad 4-sided Contoured - 16.5" x 33" x 4" Bassinet Mattress - 15" x 30" x 2" Bassinet Mattress Oval - 14" x 29" x 2" Cradle / Glider Mattress - 18" x 36" x 2" Portacrib Mattress - 24" x 38" x 2"