The Aqua Power Ankle Weights for swimmers are excellent fitness tools for water aerobics, aquatic jogging, competitive swimming and therapy. The waterproof vinyl-covered steel weights are removable for progressive exercise. Designed to conform to body contours for ultimate comfort. One size fits all. Ankle Weights set includes 40.6cm dividual 150ml vinyl coated weights. Each set is adjustable by removing the desired number of vinyl coated weights.