The French Fitness EVA Nylon Weightlifting Belt is made of EVA (Ethylene Vinyl Acetate), a robust, flexible material and is reinforced with nylon. The nylon and EVA material combination makes it incredibly flexible and breathable, doesn't catch on your thighs, and contours to your waist. The shape of the belt is designed to provide maximum comfort. This helps the belt to sit comfortably on your lower back. Features a large, padded back support to minimize rubbing or chaffing. The curved design fits you comfortably while supporting your upper body and back. The steel chain and carabiner mechanism allow weight to be easily added for chin-ups and dips. The D-shaped carabiners offer a higher load capacity, simple adjustments, and much safer dips.