Dip Belt

Large heavy belt worn around hips with chain at each end that can be attached to a barbell plate or dumbbell for additional resistance during certain exercises like dips.

a belt, usually without a buckle, with a chain or other method of attaching a weight as a simple and comfortable way of adding weight when performing exercises involving lifting one's own body. A dip belt is most commonly used when performing dips (go figure!) and chin-ups , though it can be an effective way of allowing the lifter to perform pull-downs without lifting oneself up into the air during the movement.