The Pharaoh mattress offers you fury friend the option of sleeping flat, straight or using the pillow to comfortable support their head. The mattress has a removable latex dog pillow which also has a waterproof inner , and A suade removable full washable zip cover The pillow stick to the mattress with Valcro . and is easy to take of and to replace The high quality Dual combination of HD Foam and Memory foam provides comfort and support for your dog which is better, longer lasting than hollow fibre or chip foam mattresses Memory foam is a type of polyurethane foam formulated to have a slow recovery to its original shape once depressed. It is this slow recovery that gives it its ability to support without the pressure associated with conventional foams. Memory foam is temperature sensitive and uses natural body heat to conform to the body shape, head and neck shape. Waterproof inner Zero upward pressure Unsurpassed durability Fully washable zip cover Dual layer mattress construction Removable latex pillow