Weight Training Arm Bar Expander - 3-Hole, 5-Level Adjustment, Includes Storage Bag, Inner Thigh Training, 2025 Model, Adjustable Twister Arm Chest Exerciser, Detachable, Full Body Strength Training Equipment Brand New 2025 Upgraded 3-Function Integrated Resistance System - Features detachable spring modules, offering 5 adjustable power modes to accommodate progressive strength training for beginners, intermediates, and professionals. Premium Two-Color Design - Available in blue and red, blending functionality with modern aesthetics to suit any fitness environment and personal style. Comprehensive Full Body Muscle Training - Through dynamic twisting and pressing movements, train chest, arms, shoulders, back, and core muscles, enabling a comprehensive workout in just 10 minutes a day. Robust Construction - Aircraft-grade steel springs with reinforced leather padding and non-slip foam grips ensure durability and safety during intense workouts. Space-Saving Detachable Design - Folds compactly and becomes a portable size, perfect for home gyms, offices, travel, or outdoor training, without sacrificing performance. Ergonomic Comfort Technology - Contoured handles use moisture-wicking foam for a secure grip, reducing hand fatigue even during extended use. Scientific Training Guidance - Includes an interactive digital app that provides workout tracking, form correction, and personalized training plans to maximize effectiveness. Clinically Tested Performance - Backed by laboratory testing, users report 25% faster muscle growth and 20% improved grip strength compared to traditional methods.