The Twister Arm Trainer is a compact full body workout tool designed to engage multiple upper body muscle groups including the chest, shoulders, arms, wrists and back. It provides an efficient, allinone solution for a complete home workout. Key benefits Full body engagement: targets chest, shoulders, arms, wrists and back for a comprehensive upper body workout in one device. Adjustable resistance: three resistance levels with threespeed intensity. Resistance is adjusted by changing the length, allowing it to be tailored to different levels of users from beginner to those with more advanced fitness. Durable construction: built with strength metal springs for strong elasticity and longlasting durability. Nonslip silicone grip offers a comfortable, secure hold for smooth, stable movements that effectively train your muscles. Portable and convenient: compact and easy to carry for workouts at home, in the office, or while traveling, enabling fitness anytime, anywhere. Specifications and features Compact and efficient design suitable for home gym use. Three adjustable resistance levels to accommodate various training stages. Resistance adjusted by length to match different user needs. Made with durable metal springs and a nonslip silicone grip for reliable performance. Use scenarios Home workouts: incorporate the Twister Arm Trainer into daily upper body routines to build strength and mobility without bulky equipment. Office breaks: use short sessions during the workday to relieve shoulder tension and maintain fitness. Travel and onthego training: take the compact device on trips or to the gym for consistent training anywhere.