Features: It can be used for back training, shoulder and neck stretching, open back exercises, and thin arm exercises to meet the fitness needs of various body part. Adopting elastic rope designs, it can freely adjust the tension according to personally needs, and can stretch to the great position, effectively releasing muscle tension and fatigue. Make of Silicone, it has excellent elasticity and durability, and can withstand long-term use and stretching. Adopting 8 shaped designs that conforms to ergonomics, it can fit the back, shoulder and neck curves, providing a comfortable stretching experience. The elastic rope is compact and easy to carry, allowing for exercise any times and anywheres, making it suitable for occasion such as homes, office, and travel. Specifications: Component: Silicone Type: Pink 15 pounds/01 15 pounds/Pink 25 pounds/Blue 25 pounds/01 25 pounds/Gray 35 pounds Size: about 46x11.5cm/18.11x4.53inch Package Includes: 1pc Resistance Band note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.