Soft Crumbled Memory Foam Dog Beds By Buster. The Buster Memory Foam Orthopaedic Dog bed provides undeniable comfort by reacting to the dog's body heat allowing the memory foam to mould around the shape of your dog's body distributing weight evenly and reducing any pressure points.. The cover is made from Alcantara which consists of 90% Polyester and 10% cotton, is removable/replaceable and machine washable.. Available in 2 sizes;. Medium - 70cm x 100cm. Large - 100cm x 120cm.. Beds 15cm Deep approx. Please ensure this bed is suitable for your pet's preferences, chewing habits and size, remembering that no bed is completely indestructible.