Support your wrists at optimum height for better positioning. EasyFlip feature is built-in to allow for flexibility in height (1-1/8" and 1-1/2"). Gel wrist rest is covered in soft micofiber cloth to provide ultimate comfort while the frame adds stability and durability. Non-glossy mousing surface enables superb optical mousing performance. Non-skid base keeps wrist rest secure. Gel is semi-solid so it will not leak if punctured.