SIEYIO Adjustable Arm Trainer Chest Expander Muscle Strength Trainer Workout Equipment

Highly strength metal spring, strong elastics, durability and stability. Exercise is smooth without stalling. The outer cover the metal to prevent sports injury. The handle is make of thickened nonslip foams, which both nonslip and comfortable. It enables precise exercises targeting multiple muscle groups such as chest, arm, biceps, abs, shoulders, back, and thighs. It's detachable, easy to carry, and can use it to keep your muscles up when you're outdoors, traveling, in office, or at home. With two adjustable strength levels to accommodate different exercise needs, this arm trainer offers efficient and portable exercise solution for both beginners and professional.