Pro-Tec Heatable AcuRoll Massage Ball men "Neck-cooling during exercise improves repeated

"Neck-cooling during exercise improves repeated sprint performance in a hot environment without altering physiological or neuroendocrinological responses

Leak-proof design with no corners

Whether you run on a track

5 in / 83cm

Pro-Tec Heatable AcuRoll Massage Ball men "Neck-cooling during exercise improves repeatedGeneral Application Heatable, deep tissue massage ball provides effective pain relief anytime Relief for pain tightness in neck, shoulders, back, leg, hips and feet Medical Application Uses 100% natural acupressure and heat to release tight muscles and joints for larger muscles in your lower & mid back, legs, quads, hamstrings, IT band, and calves Design Features 7 years of research and testing Diameter 6. 5 x 2. 5" Microwave for one minute to receive