Ergonomic wrist rest for standard sized keyboards. Unique design: trapezium form follows the natural arm and wrist position. Options: for standard or compact keyboards. Hygienic: antibacterial technology. Comfortable: cushioning gel supports wrists. Ergonomic: keeps your wrist in line with hand and arm. Size: 19.25 inches wide for full-size keyboards. When working with a keyboard and mouse it is important that the arm is sufficiently supported. A wrist support helps to keep the wrist straight during typing and can be used "to rest" for a moment during one's work. Holding your wrist at the right height when typing is important. It must be kept as straight as possible with the keyboard. This keeps the wrist posture neutral and avoids muscle strain.