Harbinger 7362200 HumanX Weight Vest, 40 lb. Increase your workout intensity and build strength, power and endurance faster 40lb Weight Vest - fully adjustable in 2 lb. increments, 2-40lbs Custom impact-resistant FLEX weights contour to torso and stay in position Tailored design with fully adjustable shoulder straps and neoprene belt conforms to body for secure fit and max mobility Tough abrasion-resistant outer shell with dual padded shoulders and chest