The Hyper Vest PRO weighted vest is nothing less than revolutionary. The innovative design features a unique fabric control system that hugs the body for an extremely comfortable fit, like a compression shirt, but does not restrict range of motion. The patented design flexes in the horizontal plane but not in the vertical plane. This allows for full chest expansion for breathing while keeping the weights in place even during vigorous, multi-plane movements. The breathable, odor-resistant, wicking fabric and generous open side panels provides superior ventilation. Highly adjustable side lacing and slim profile allows for exceptional fit and comfort. To determine the best weight vest size for your height and weight please view our Sizing Chart. The 1/4" thick high-density steel weights make this weight vest barely detectable under a shirt. The Hyper Vest PRO weight vest comes pre-loaded with 10 lbs of high-density steel weights and is fully adjustable. The individual weight bar weighs 2.25oz each and can be easily removed or additional weights can be added. Each pocket can hold two weights and weights can be arranged across pockets to change weight distribution. Additional booster weight packs are available here. Described as the best weight vest by Men's Health Magazine, the Hyper Vest PRO can be used for sports performance training, tactical training for fire, police, and military as well as general fitness, strength training, weight loss, and rehabilitation.