Mattress filler Visco Elastic Memory Foam Topping with a High Density Foam Base. Ideal for Older & Arthritic Dogs by eliminating pressure points on a dogs joints. Removable zip fastening fully machine washable cover, waterproof lined to protect mattress filler & reduce odours. Hardwearing furnishing grade quality faux suede materials used on cover. Spare covers available. Available in 3 sizes:- Small 76 cm X 50 cm X 10 cm Regular 101 cm X 76 cm X 12.5 cm Jumbo 137 cm X 91 cm X 12.5 cm