Compared to other massage balls, the Hypersphere Mini helps to pinpoint and release trigger points faster, deeper and less painfully using high-intensity vibration. The Hypersphere is portable and only 3 inch in diameter, which helps to release tension in targeted areas better than any roller can. The Hypersphere Mini vibrating ball uses three high-intensity vibration settings that can be used to activate, soothe or loosen muscles/fascia in the feet, calves, hamstrings, glutes, hip flexors, shoulders, back and forearms. The high-intensity vibration allows you to release tension and targeted areas deeper than a foam roller, while a dual exterior, silicone grip texture plus a dense shell offers optimal sheering. With a rechargeable lithium battery, the vibrating ball can give over 2 hours of use per charge. 3 inches in diameter, the Hypersphere is the ideal size for trigger point release, getting deep into areas where rollers can\'t get. The benefits of the vibration are: loosens and releases trigger points or tender areas as fast as 30 seconds, can be used to relieve plantar fasciitis, tight hips, tension in upper/lower back, sore pec or tight piriformis and significant reduction in pain associated with myofascial release.