Made of LycraŽ and Neoprene, ATI Strength Weighted Training Shorts provide a skintight fit that eliminates chafing and pain. Individual inner pockets contain powder coated, lead weights to help develop specific muscle groups. Use will enhance and increase speed, quickness, and strength. Detachable lower section make the shorts versatile for a range of sports and training regimens. Individual inner weight pockets. Single-lateral outer waist strap for comfort fit. Antibacterial/antimicrobial treated. All seams are bound for long-lasting durability. 12 lbs. maximum. 5 lbs of weights are included with purchase. Additional 5 lb packs (#14311241) sold separately. WAIST SIZE CHART: S = 25"-28", M = 28"-32", L = 32"-35", XL = 35"-39", XXL = 39"-43".