Stairs, leg lifts, jumps! Slide these adjustable weights over the shoes and secure them with the over-sized strap, Soft, flexible 1/2 lb, Flex-Metal weights conform to the shape of the foot, Shoe Irons position the weight further from the knee and hip, so you get the same effects that ankle weights provide but with less weight, Fit most adult shoe sizes, Adjustable from 1/2 lb, to 3 lbs, per foot in 1/2 lb, increments, A pair includes 6 (1/2 lb, ) weights yielding 1-1/2 lbs, per foot, Additional Flex-Metal weights sold separately, SKU: PWSS663