Gaiam Restore Vibrating Foot Roller is designed to loosen tight, sore muscles and works to improve mobility and increase circulation, which helps to decrease recovery time. Roller shape fits perfectly into the arch of the foot, while the textured surface provides a deeper massage that helps alleviate pain and accelerates recovery. Features a soothing vibration therapy massage to help relieve sore feet and foot pain from exercise or chronic pain issues. Targets pressure points and helps to increase circulation and blood flow that will aid and accelerate healing and recovery time to alleviate sore muscles. Measures 8.5"L x 3.5"W / Requires 2 AAA Batteries (Included).