Adding a Handy Combi Duo Forearm Support to your desk will offer a large soft area of support just where you need it for both Keyboard and Mousing and is width adjustable to suit a wide range of users. Without a forearm support a small support area near or on the edge of your desk will lead to pressure points in your wrist area which must be avoided. Hand Combi Comfort will help support both forearms and palms for Keyboarding as well as Mousing. The small increase in height will suit hand alignment for the keyboard. Attached with the fitting kit provided to the front straight edge of desk or to most corner or wave desks that are 25mm thick Black Lycra fabric covered.