1. Adjustable resistance for all levels This adjustable arm trainer and chest exerciser provides three resistance settings, making it suitable for beginners and more advanced users pursuing serious upper body strength training. 2. Full upper body activation Targets arms, chest, shoulders, and forearms with an allinone twister design, delivering a compact solution for home chest workout routines. 3. Compact and portable fitness gear Lightweight, foldable, and spacesaving, ideal for small apartments, garages, and travel. This versatile piece fits easily into limited spaces and on the road. 4. Durable power twister design Built with a reinforced fine steel spring, ergonomic foam grips, and an antislip structure to help ensure a safe and efficient workout. Use scenarios At home strength routine: Incorporate the trainer into a regular upperbody program to work the arms, chest, shoulders, and forearms across different resistance settings. Warmup or cooldown: Use prior to or after main workouts to activate and loosen upperbody muscles, improving performance and reducing stiffness. Travel or smallspace workouts: Due to its lightweight, foldable, and portable nature, it's suitable for hotel rooms, office breaks, or places with limited exercise space.