Description: This Archery Strength Trainer made of polyethylene and latex tube with high elasticity, durable and unbreakable Minimum tension 9LBS/Maximum tension about 19LBS. Adjustable range: 2LBS-9LBS. Suitable for more people to use according to their own To build strength to pull the bow for beginner and for pros archery bow training, latissimus dorsi, finger, arm and back strength workout Also can be used as home/gym workout equipment, it strengthens arms, chest, shoulders, back, legs, and buns well Design to increases muscle strength, release shoulder stiffness, and improves archery posture Specification: Material: Polyethylene, Latex Tube Size: 17x13×4.5cm/0.67X0.51×0.18inch Color: Red/Black Red/Black Yellow/Yellow Black Package Includes: 1 Piece Archery Stretch Band 1 Piece Storage Bag Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!