Twister Arm Trainer is a compact full body workout tool with a unique Ushape design that not only targets the arms but also engages multiple muscle groups. It delivers a versatile exercise experience by involving the chest, wrists, back, legs, and shoulders. Key benefits Fullbody engagement in a single tool: the Ushape design activates arms while also stimulating chest, wrists, back, legs, and shoulders for a balanced workout. Efficient strength training: performs multiple muscle groups at once, helping you build overall strength with a concise routine. Durable and smooth operation: built with strength metal springs for strong elasticity, durability, and stable, uninterrupted motion. Safe and comfortable use: leatherwrapped metal protects the skin, and thickened antislip foam handles ensure a secure, comfortable grip during all movements. Product features Ushape design for versatile range of motion and fullbody workouts Material and construction: strength metal springs; leatherwrapped metal; thickened antislip foam handles Compact and portable for home use and easy storage Use scenarios Athome workouts in limited space: perform a fullbody routine without bulky equipment Quick warmup: activate upper and lower body before cardio or other training Targeted strength sessions: integrate chest, back, shoulders, arms, and legs into a concise circuit for efficient training Safety and comfort notes Ergonomic design focused on safety and comfort during use Protective leather wrapping and secure grip reduce the risk of injury during movement