Made of ultra-soft quilted jacquard bamboo rayon. Hypoallergenic construction and an impenetrable cover help you stay healthy and breathe easily. This 100% waterproof fabric encases your mattress on 5 sides that block liquids and moisture from getting in. This soft fabric breathes naturally and won't trap body heat or moisture so you are never too hot or cold. Fitted sheet style cover with elastic all around. Features: Waterproof - whether you have pets or kids, accidents and spills happen. Hypoallergenic - this impenetrable cover helps you breathe easy. Fitted sheet pocket depth: 14" Inch fits mattresses up to 16" Inches Cal King - 72" x 84" Full - 54" x 75" King - 78" x 80" Queen - 60" x 80" Twin - 39" x 75" Twin XL - 39" x 80"