Features: 1.Weight Adjustable: With 12pcs/16pcs pouches for loading sand or steel plate(NOT included steel plate or sand), can easily increase or reduce weight, choose the weight you feel suitable to exercise. 2.Shock Absorption Design: Highly flexible compressed sponge interlining, for protection and shock absorption, it is an ideal equipment for physical fitness, losing weight and exercising agile. 3.Weighted Vest: Increase resistance in your workouts with the adjustable strength fitness vest, our weighted body vests create just the right amount of heavy resistance during muscle building, bodyweight exercises, and heart-pumping cardio activities. .