Features:_x000D_Steel Construction: Our U Shape-Twister Arm Exerciser features a dense and strong steel tube, ensuring durability and safety during high-intensity workouts. Say goodbye to worries about spring breakage and wrist injuries._x000D_Adjustables Resistance: The strength can be easily adjusted by adjusting the buckle, and the 3-speed strength can be adjusted freely. Just adjusting the length, resistance can be adjusted_x000D_Complete Body Exercise System: Tones biceps triceps, even thighs - Lift Bustline- Define shoulders chest- Trim your waist line- Shape tights. This lightweight and portable training tool will allow you to build lean muscles without bulking_x000D_Use for Anyone Anywhere: Quiet compact design makes it easy to carry and use virtually anywhere. It can be used by any age group, gender and those of all fitness levels to help achieve weight loss and muscle toning goals_x000D_Get Lean Fit Fast: With only a few minutes every day, this training tool will help you build muscle strength, tones your body, and lose weight. Lightweight and portable, you can pack it up and bring it with you anywhere_x000D_Notice:_x000D_1.Actual color may be slightly different from the image due to different light effect_x000D_2.Please allow 1-3cm deviation due to manual measurement_x000D_ Size: As picture show _x000D_Material: Steel spring foam_x000D_ Package List:_x000D_1x U Shape Twister-Arm Exerciser