Kelly Computer Supply Viscoflex Extended Keyboard Wrist Rest, Black, Sold as 1 Each Keyboard and mouse support is ergonomically shaped and designed at a positive angle. Mouse surface can be used to add extra space to a desk. Long enough to hold both a keyboard and mouse. Lexan mousing surface. Lycra? covering. Easy to clean. Wrist supports are Viscoflex? Memory Foam, treated with Aegis? Microbe Shield Protection.