【3-Progressive Resistance Levels (70-100 LBS)】Strengthen your arms, chest, shoulders, and upper body with this versatile twister arm trainer. Level 1 (70 lbs) for beginners, Level 3 (100 lbs) for elite athletes. 【 Ergonomic Foam Handle 】 The scientifically angled grip reduces wrist strain and maximizes force output. The wavy foam absorbs sweat and locks your hands, preventing them from slipping even when exercising your arms. 【 High Strength&Durability 】 High-Quality Steel Pipes&Extra-long heavy-duty springs resist rust and deformation. Durable arm trainer and chest trainer for men/women. 【 Detachable design 】 You can exercise anytime and anywhere. You can assemble it at any time in the office, living room, during a trip or at the gym to exercise your upper body. 【 Exquisite Packaging 】 We offer excellent TWISTER ARM TRAINER packaging, which is a wonderful gift choice. We offer high-quality after-sales service. If you encounter any problems after purchase, you can contact us at any time for solutions! The TWISTER ARM TRAINER can help you become a strong and powerful man. It is a multi-functional, portable and adjustable upper body training equipment. Through our exercise guide, you can exercise your chest muscles, shoulders, arms, back and inner thigh muscles simultaneously! There are 3-adjustable strength levels to make your trainings more comfortable!