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Stephanier
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Fulfilled by Amazon
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Product Details
✓Full-Body Muscle Activation: Unlike basic chest expanders that only work your chest, this twister arm trainer engages shoulders, back, arms, core, and legs through a natural twisting motion. One movement, multiple muscle groups—maximize every rep for faster upper body toning and strength gain
✓3-Stage Power Progression: Master your form at 66 lbs, build raw strength at 88 lbs, and push your explosive power at 110 lbs. Each stage delivers crisp, mechanical feedback, giving you a clear sense of progression. Designed for intermediate to advanced users who want controlled, measurable overload
✓Office, Travel & Home Ready: Lightweight and foldable, it slips easily into any backpack or suitcase. The full-leather sheath protects against hair pinching, while the foam handles provide a silent, sweat-proof grip—train during Zoom calls, in hotel rooms, or while watching TV at home
✓Reinforced 4-Spring Safety Build: Built with 4 heavy-duty steel springs, fully encased in durable leather to prevent rust and pinch points. Non-slip TPR handles stay comfortable during high-intensity sessions. Tested for consistent tension across thousands of reps—reliable set after set
✓Engineered for Real Results: Designed with biomechanics in mind, the 4-spring symmetrical structure delivers balanced resistance throughout the entire range of motion. Whether you're working on endurance, hypertrophy, or explosive strength, this single tool adapts to your training style—no complex setup, just grab and go