Water shifts inside this bag as it moves, forcing the core and stabilizer muscles to correct on every rep in a way a fixed dumbbell never demands. Load adjusts anywhere from empty to 50 pounds simply by changing the fill level, so a beginner starts light and an experienced lifter tops it off for squats, rowing swings, snatches and carries. The shell is cut from 1.0 millimeter high-transparency Pvc film with reinforced seams and a leak-proof valve, holding pressure through drops, swings and impacts against a floor. Measuring 7.87 inches across and 32.28 inches long, the bag shoulders easily for lunges or presses and rests across the back for loaded carries. Empty weight is only 2.65 pounds, so the drained bag rolls up for a gym bag, a car trunk or a closet shelf instead of taking a rack space. An air pump and soft handles ship in the box for filling and gripping.
Water shifts inside this bag as it moves, forcing the core and stabilizer muscles to correct on every rep in a way a fixed dumbbell never demands. Load adjusts anywhere from empty to 50 pounds simply by changing the fill level, so a beginner starts light and an experienced lifter tops it off for squats, rowing swings, snatches and carries. The shell is cut from 1.0 millimeter high-transparency Pvc film with reinforced seams and a leak-proof valve, holding pressure through drops, swings and impacts against a floor. Measuring 7.87 inches across and 32.28 inches long, the bag shoulders easily for lunges or presses and rests across the back for loaded carries. Empty weight is only 2.65 pounds, so the drained bag rolls up for a gym bag, a car trunk or a closet shelf instead of taking a rack space. An air pump and soft handles ship in the box for filling and gripping.
