20 17 tennis string is a polyester monofilament created in a specific way to provide excellent durability while also helping to reduce arm fatigue

absorbing shock at high-impact areas to reduce pressure on your joints

Decoupled heel offers reduced pronation and promotes a better foot strike

Upper Arm and more

making it easy to organize different types of tennis balls

currex AcePRO Medium Profile Tennis Insole Size:Large 20 17 tennis string isTake your arch support one step above with currex AcePRO Medium Profile insoles! These tennis insoles ensure natural movement and maximum comfort from a deep heel cup and advanced metatarsal bridge technology. Dynamic arch support provides shock absorption at impact, reducing stress on your joints to help prevent injuries. With currex AcePRO Medium Profile insoles under your feet, nothing will hold you back from playing your best match! Deep heel cup