[Tough and Durable Cover: Not chew proof but the well stitched Oxford fabric is tough enough to withstand the diging and chewing. Waterproof Plastic Inner Liner: The foam encased in a removable waterproof plastic to keep the foam stays clean and dry. "Outdoor and Indoor Dog Bed: The beds holding up great in the outdoor conditionsespecially suitable for the old dogs doesnt like to curl up inside the dog house." Easy Removable Cover for Cleaning: Both the outer and inner covers can be removed and washedIt is secured with an smooth and sturdy L-shaped zipperyou can easily take off and machine wash or spot clean. Orthopedic Dog Bed: The soft and supportive Egg Crate foam ensures that she receives the right balance of comfort and orthopedic support promoting her overall well-being especially for older dogs with joints and hip pain.]