Ache & Pain Relief: Use the Bodylastics muscle roller before and after physical activity and that will accelerate muscle recovery and disperse the effects of lactic acid following activity and dramatically improve your strength, flexibility and endurance. Quick Recovery: Prevents injuries and shortens recovery time. Use on quads, hamstrings, calves, traps, shoulders, neck, lower back and more! Release trigger points, increase blood flow and aid myofascial release of cramping, aching, sore joints. No Squeaks: NO Bending, NO Breaking, NO Squeaking, No Ripping Out Hair. This muscle roller is built with a solid core steel tube, and the gears are designed with a tread design. Unlike others, the gap between our gears is specially designed so that you don't make a particular noise when you use it. Anti-Slip Handle: Premium polypropylene handle with thermoplastic rubber anti-slip mat helps you hit the body spots which are hard to touch and allows for simple self-massage. Smart, Portable Design: Each 18 manual massager is slim, lightweight, and travel size, making it perfect for use at home, the gym, Yoga studio, or CrossFit.