Brand New, Never Used, 4 Arm Strong arm pump eliminator device - size XL. With enhanced stretch forearm device, you can improve grip strength, treat forearm and elbow pain, increase flexibility and durability, and prevent arm pump! Great for any athlete who uses their arms. Easy to use. Fits easily in your gym bag. Durable and made to last. At 4ARM STRONG, we wanted to help athletes of all types find a better way to improve forearm flexibility and function, relieve elbow pain, Carpal Tunnel Symptoms, reduce the risk of elbow injuries and also avoid performance killing arm pump. Arm pump happens when too much blood gathers in the forearm, which can cause you to lose grip strength. The 4ARM STRONG is designed to help you enjoy freer, less restrictive movement while you’re training or competing. Specs: Weight: 0.65 lbs Dimensions: 8 x 10 x 10 cm Transparent injection-molded thermoplastic polymers Delrin® high-performance acetal resin Lightweight medical grade 6061 aluminum Velcro fastening system. Sizing: Measure your forearm at its widest point Sizing based on your forearm size in inches: Comes with LARGE Device (11"-13" inches) and Xtra Lager Strap. For forearms greater than 13"