Harbinger HumanX Weight Vest, 10 lb. Increase your workout intensity and build strength, power and endurance faster 10lb Weight Vest - fully adjustable in 1/2lb increments, 1/2-10lbs 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 Abrasion-resistant outer shell with dual padded shoulders and chest