The power wheel is a super tool for training core strength. It improves balance and stability in the core and shoulders, as well as power and strength in the chest, back, arms, core, gluteus, hamstrings and even calves. Maximum user weight: 100kgs. The power wheel is a super tool for training core strength. Single wheel design offers maximum abdominal workout benefit. It improves balance and stability in the core and shoulders, as well as, power and strength in the chest, back, arms, core, gluteus, hamstrings and even calves. Maximum user weight 100kg (15st 10lb). General information:Size H36, W36, D56cm. Minimal assembly.