Adjustable Weight Vest: This one-size-fits-most vest by Zelus weighs 20 lb. on its own and can reach up to 32 lb. with 6 included 2 lb. iron sand weight bags, offering adjustable resistance to enhance your core strength and endurance during any workout Adjustable Ergonomic Design: Our weighted vest evenly distributes its load even during intense workouts, with its hook-and-loop fasteners offering a snug fit for teens or adults Durable & Comfortable: Our soft neoprene material gives you long-lasting comfort combined with long-lasting use, able to handle everything from yoga positions to kickboxing, light jogging to intense cycling Helpful & Safe: Store your keys, wallet, or phone in the large pocket to keep them secure while you move, and stay visible and safe with high-visibility reflective strips on the front, shoulders, and back Prompt Response: Zelus's adjustable weighted vest comes with our friendly 24/7 customer service; try it at no risk and blow through any plateau with ease