1. [Unique Full Upper Body Fitness Equipment]Twister Arm Trainer acts as your personal workout coach to help you get an excellent chest workout with a training guide chart. The power bar can accurately exercise multiple muscle groups, including chest, arms, biceps, abdominal muscles, shoulders and back, and thigh muscles. 2. [Multi-functional Strength Training Machine]This muscle training bar is different from traditional arm exercise bars, it can stimulate more muscle groups, including chest exercises, wrist exercises, arms, back, legs and shoulders. Just follow the standard instructions and you can get a stronger body. It is simpler and r, and it is the right choice for your home gym. 3. [High-quality Materials]High-strength metal spring, strong elasticity, durable and stable. Exercise smoothly without stagnation. The outer layer of leather wraps the metal to prevent sports injuries. The handle is made of thickened non-slip foam, which is non-slip and comfortable. Three intensity levels are available to meet different workout needs. 4. [Efficient and Workout]Whether you are a beginner or a professional athlete, Arm Trainer can help you with strength training - simple and practical. It is detachable and does not take up space, you can use it outdoors, when traveling, in the office or at home to keep your muscles developed. It is a great addition to your gym. 10 minutes each time, 4 times a week, will give you perfect muscles.