Key benefits Full upper body and core development: targets chest, shoulders, arms (biceps and triceps), forearms, and core to improve upper limb strength and coordination. Includes movement patterns such as rotation, pushing, and pulling to activate small stabilizer muscles that are hard to train with traditional equipment. Progressive resistance for all levels: spring resistance ranges from 44 to 88 lb. Begin with lower resistance and increase as you gain strength, making it suitable for beginners through advanced users while balancing safety and foundational strength gains. Portable and detachable design: lightweight and easy to assemble or disassemble. Suitable for home, gym, or outdoor use. Compact storage supports travel and onthego workouts. Durable threelevel resistance system: strength metal spring with strong elasticity and long service life. Smooth spring resistance with no jerking, reducing joint impact. Three levels (primary/beginner, intermediate, advanced) meet different intensity needs. Leatherwrapped design helps prevent scratches and enhances safety. Userfriendly and safe: comfortable grips and a design focused on stability and control during use. What it is and how it helps A versatile upper body training device that engages multiple muscle groups in single and integrated movements. The combination of rotation, pushing, and pulling patterns expands training options beyond standard routines, helping you build strength and coordination efficiently. Specifications and materials Resistance: 4488 lb spring Levels: three resistance levels (beginner, intermediate, advanced) Spring: strength metal with long service life Grip: leatherwrapped design to reduce wear and protect skin Portability: lightweight, detachable, and easy to store Use scenarios At home or hotel gym: use for a quick full upper body workout during a break, or to add variety to a routine with rotation and pull/push movements. In gym settings: integrate into traditional strength programs to target stabilizers and improve functional strength without bulky equipment. Outdoor or travel workouts: take it along for park sessions or hotel room workouts where space and equipment are limited. Designed to offer clear functional benefits with durable construction, this device supports scalable training across fitness levels while remaining portable and easy to use. It maintains a focus on safety and performance through its leatherwrapped grip, smooth resistance, and jointfriendly operation.