Harbinger Polypropylene Dip Belt with 30-Inch Steel Chain Dip belt constructed of durable polypropylene with heavy duty steel grommets to secure chain to belt. Contoured belt design provides back support and fits comfortably during serious training. 30-inch steel chain and carabiner mechanism to easily add weight for chin-ups and dips. Weighted dip belt helps build power and strength in triceps and chest. Adjustable, one size fits all.