This elasticated Cho-Pat shin & calf sleeve, with upper & lower Velcro fastening straps, is the professionals' choice for the relief of the symptoms of shin splints during running activities. Measure circumference around the widest part of the calf. The Cho-Pat Sleeve's elasticated fabric provides gentle support to the entire shin & calf region, thus providing reassurance & lessening the strain on the painful soft tissues of the shin. The upper & lower Velcro fasteners apply additional compression across the muscles & tendons of the lower leg, preventing them from generating their maximum contraction, which reduces the stress on the tendons themselves & the area of the shin that they attach to.