The Xvest X4040 includes 40 lbs and can only hold up to 40 lbs. Used by: Professional and College Athletes; men and women that want to increase their fitness level. Recommended for: People looking to go to the next level. For all sports. Sports specific drills. Fitness/Skill level: Intermediate to Advanced Xvest Sizes X-Small fits Waist sizes 22" - 28" Small fits Waist sizes 26" - 32" Medium fits Waist sizes 30" - 36" Large fits Waist sizes 34" - 40" X-Large fits Waist sizes 38" - 44" Please ensure to choose size below.