Never used. The Hip Therapy Pain Reliever by Sharper Image soothes muscle aches and soreness with 12 infrared LEDs, 8 heating elements and 4 vibration massage motors. A built-in control panel adjusts the heat from 104°F to 149°F and operates the massage motors (2 upper, 2 lower or all 4 together). Heat and massage work together or independently. One size fits most. 🛒 Please shop my whole closet. New items added every day. No reasonable offer will be denied. I ship within 24 hours of purchase. 💌 📏Leave a comment if you’d like any measurements.