TheraBand FlexBar, Tennis Elbow Therapy Bar, Relieve Tendonitis Pain & Improve Grip Strength, Resistance Bar for Golfers Elbow & Tendinitis TheraBand FlexBar Green is ideal for those suffering from tennis elbow pain, looking to increase flexibility and range of motion, and to strengthen the elbow, wrist, forearm, and hand Clinically researched and proven to reduce elbow pain by 81% and increase strength in the tendons by 72% in tennis elbow patients, Tyler Twist with FlexBar is simple and works Ridged design is easy to grip and twist for elbow, wrist, forearm and hand rehabilitation and strengthening, lateral epicondylitis therapy, great for musicians, painters and gardeners FlexBar is portable and convenient exercise, rehab, and injury prevention equipment, packaging includes detailed exercise instructions 12" long, 1 3/4" diameter, made from dry natural rubber, takes 15 pounds of force to bend to a U-shape