Sew with comfort, let your knees relax. It's tilted at a precise angle for correct posture. Fits all machine pedals. Allows relaxed, natural positioning for comfort. Stop chasing your foot control around. The nonskid material on the inner surface of the base prevents the foot control from moving around. It improves your sewing posture, too! Includes a 12" x 12" slip guard to place under the Neez-ez base. Pedal area is 9 1/2" x 7 1/4"