Nantong dumbbell brings users very practical advantages. Firstly. The smart weight distribution ensures that users are able to maintain a good posture, minimising the chance of injury. Secondly. Its auto roll design let side step snooze mode exercise cut scenes; it is incredibly effective and portable in practice. Thirdly. The ergonomic design assists you to hold it, and also aids in making the exercises not only concentrates–but also demanding–to some extent. Its also a long durability dumbell which means you dont need to replace your dumbells in few years. If you're ready to upgrade your strength game, the Nantong dumbbell is a must.