New Trident Ankle Weights for Scuba Diving or Professional Fitness (Black - 3.5 Lbs per Pair) The use of ankle weights permit a diver to remove some of the weight from the weight belt. However, enough weight should be left on the weight belt so that removal of the belt (even at depth) remains an effective emergency procedure. Fastening is provided by sturdy secure Delrin buckles which can be released with one hand. Ankle Weights are manufactured using form fitting comfortable lead shot in a stretchy rubber and fabric sleeve.