The patented ErgoRest forearm support is a fully-adjustable, articulated support for elbows, forearms, and wrists.  The ErgoRest easily clamps onto the edge of the desk surface and provides easy, fluid movement horizontally allowinng the user to move from switch from keying to mousing without any disruption of support. Features: Lightweight, Flexible, & Mobile -- Can be easily removed from desk and taken along with you Sturdy construction -- Fabricated from aluminum alloys and tough nylon fibers Soft forearm pad is upholstered with rich, genuine leather. Maximum operating span:  9.25" Maximum load capacity:  26 lbs Maximum height adjustment:  2.95" Mounting clamp accommodates surfaces up to 1 5/8" thick Available in a range of sizes and colors to suit your needs