The weighted vest from 4Trainer is an essential tool on strength and explosiveness development. You have to use it during fitness exercises with body weight (pushups, press-ups, dips, lunges, squat), on plyometric or on circuit training- Cross fit type. Thanks to the distribution of weights on the front and in the back, it is comfortable and well balanced. The weighted vest will fit perfectly your body shape for optimal support. With its efficient and secure Velcro closure system, the weighted vest will not move during your workout. 4Trainer weighted vest has 20 weight of 500 grams. The charge can be changed by removing weights. Note that weight are positioned on individual way in the jacket, and are wrapped, as a hygienic measure, in a plastic bag. That will avoid any contact between the steel and the skin, or the sweats. Characteristics: 20 weights of 500 grams. Velcro closure. Comfortable. One size.