PREMIUM MATERIAL: This strength training weight vest is built to last with durable neoprene rubber fabric, double-stitching, and weighted with iron sand for extreme durability through hundreds of different workoutsDUAL STORAGE POCKETS: Enjoy your workout without the fear of losing your valuables! Includes detachable front zipper pockets to keep your cell phone, car keys, and other items safe and secure, plus a rear elastic-mesh pocket for extra convenienceCOMFORTABLE MATERIAL: Enjoy your workout in complete comfort with maximum mobility. With cushioned shoulder straps and gentle, non-chafing fabrics, you can go the extra mile in your personal fitness journey with ease and comfortOne Size Fits Most: Our weight vest is equipped with adjustable buckle straps that offer a snug fit for chest sizes between 31.5" and 45". No matter your body type, it stays securely in place as you work to improve your stamina and strengthEVEN WEIGHT DISTRIBUTION: Evenly filled with iron sand, this well-balanced vest decreases injury risk while working out. For beginners, we recommend starting with a lower weight, such as the 20 lb weight vest, and working your way up