STK Grip handheld massage roller uses patented AcuGrip surface material, unique in gripping skin. This feature offers users smooth self-massage therapies, improving movements, increasing blood and oxygen circulation to muscles, accelerating muscles’ recoveries. Slim ergonomic handles facilitate the application of pressure to soft tissues in the hard-to-reach muscle knots. Rolling over problemed muscles with STK Grip facilitates users-controlled pressure for a comfortable self-massage, reducing muscles soreness, increasing circulation, fastening muscles’ quick recovery post workout. Ideal for upper and lower body including back, calves, hamstrings, quadriceps, IT band and feet. To be used while standing or seated.