Benefits of TheraBand FlexBar TheraBand FlexBar is a lightweight portable exerciser. A research-proven exercise tool for tennis elbow. The FlexBar has been designed specifically to improve your grip strength and upper extremity function. TheraBand FlexBar Features and Benefits Durable, high-quality treatment for Tennis Elbow Works to improve upper extremities and decrease pain through bending, twisting or oscillating Suitable for improving grip and forearm strength in all ages, ranging from youths to seniors and even elite athletes Rubber bar has easy to grip texture with ridges for comfortable use during bending, twisting, and oscillating movements Great for baseball players, golfers, and tennis players, and those suffering from overuse to strengthen the arm and shoulder and reduce pain in the forearm and elbow 12" long, 1.5" diameter bar made from dry natural rubber, takes 10 lbs of force to bend to a U-shape Four levels of progressive resistance and size are available Yellow (5 pounds) Red (10 pounds) Green (15 pounds) Blue (25 pounds) Weight refers to the amount of force required to bend the bar into a "U" Continue shopping for resistance exercise products.