The Aqua lung Neoprene Leg Strap. Is made for function and comfort. Rubber leg straps can be hard to adjust and uncomfortable. The large fastex buckles make the straps easy to adjust. The skin-out neoprene back reduces slipping and the Supratex front is abrasion resistent. The double layer hook and loop attachment system works with most Aqua Lung dive knives. 5mm Neoprene with skin-out back and Supratex front Two Duraflex fastex buckles Double layer hook and loop attachment system 35" adjustable straps for thigh, calf or arm locations Compatible with most Aqua Lung dive knives