Perform Better Extreme Fitness Adjustable Weighted Weight Vest Neoprene coated steel weights are 0.5 lb. each and easy to take in and out of the vests to change weight 10.lb. vests can hold up to 20 lbs. of weights; 20 lb. vests can hold up to 40 lbs. of weight Vests are machine washable, making them easy to clean Velcro closure keeps the vest snug and tight - One size fits all