Pad can be removed to double as squeeze-exercise device. Therasoft® cushioning material is nonabrasive, durable and antistatic. Includes an illustrated exercise guide with a program to relax muscles and stimulate circulation. Fits Natural™ style keyboard. Includes a removable ten-key support cushion for squeeze exercising. 21-1/4w x 4-3/4d x 1-1/2h.