Buster memory foam pet bed soft crumbled memory foam dog beds by busterthe buster memory foam orthopedic dog bed provides undeniable comfort by reacting to the dog39s body heat allowing the memory foam to mould around the shape of your dog39s body distributing weight evenly and reducing any pressure points this is ideal for older dogs and dogs that suffer from arthritis and other joint problems the cover is made from alacantra which consists of 90 polyester and 10 cotton is removablereplaceable