The Stroops Calf Strap has a Velcro clasp that can easy be attached to the calf. Because of the Velcro is it possible to fasten it thight and it will stay in place, regardless the size of the calf. The Calf Strap has a soft padding so it won’t cut into the skin. A Slastix Clip can be attached to the ring that is on the Calf Strap. This ring is made of strong material and is fixed so it won’t shove around during the exercises. The Stroops Calf Strap can be combined with Slastix of different sizes, and that makes it a multi-functional tool. Light exercises can be performed, but when a bigger Slastix Clip is used there will be more resistance, which results in heavier exercises that are more intense. Specifications Stroops Calf Strap: Useable with all types of Slastix Clips Easy Velcro clasp Soft padding Many training possibilities The Stroops Calf Strap is a calf bracelet that can be used in combination with the Slastix Clips. It enlarges the training possibilities a lot. The Calf Strap can be easily fastened around the calf and is equipped with a ring to which the Slastix Clips can be attached.