QUALITY MATERIALHigh strength metal spring, strong elasticity, durability and stability. Exercise is smooth without stalling. The outer leather covers the metal to prevent sports injury. The handle is made of thickened anti-slip foam, which is both anti-slip and comfortable. Three strength levels to choose, to meet different exercise needs.MULTI-FUNCTIONAL STRENGTH TRAINING MACHINEmuscle training bars is different from a traditional arm workout bar in that it stimulates more muscle groups, including chest exercises, wrist exercises, arms, back, legs, and shoulders. You can get a stronger body just by following the standard instructions. It's simpler and safer, making it the right choice for home gyms.EFFICIENT&PORTABLE EXERCISEWhether you are a beginner or a professional athlete, It can help you with strength training, simple and practical. It's detachable, doesn't take up space, and you can use it to keep your muscles up when you're outdoors, traveling, in the office, or at home. It's a great addition to your gym. 10 min/ time,4 times/week, will give you perfect muscles.SATISFACTION GUARANETT a professional home fitness brandIf you have any questions about the product or are not satisfied with the product, please feel free to contact us, we will provide you with the best solution. Your satisfaction is our biggest concern.UNIQUE FULL UPPER BODY FITNESS EQUIPMENT U spring bars as your personal workout trainer and helping you get a killer chest workout,Through the training guide chart. Strength bar work multiple muscle groups with precision, including chest, arms, biceps, abs, shoulders and back, and thigh muscles.