Classic metal hooks MADMAX are designed to strengthen the grip when performing heavy pulling and pulling exercises. You will also appreciate them when exercising the abdominal muscles while hanging on the horizontal bar, when exercising the back, torso straighteners, or problematic thigh areas. The hooks are atteched to the palm area witha special padded material made to wisthstand heavy loads. A pair of opposing velcro straps on the back of the hand ensures the opening and closing of the hooks.