GoFLX 33 cm (13 Inch) Therapy Foam Roller for Muscle Recovery & Post-Workout Stretching Premium quality GoFLX Therapy Roller for exercise, stretching and treatment for muscle pains It is versatile and can target a number of muscle groups including the upper & lower back, legs, biceps, torso and glutes Removes built up toxins from muscle tissue improving blood circulation Used to treat complex injuries such as runners knee, shin splints, IT Band and Achilles Tendinopathy (Achilles Heel) No more expensive massages! Use the foam roller whenever you want, wherever you want