Looking for exceptional comfort, feel, and power? XCEL is the next best string to natural gut. XCEL comes loaded with shock absorbing properties that provide you impressive performance, while being easy on your arm. Your strings are the engine of your racquet. Half of your racquet’s performance comes from your strings. Which means choosing the right string is important. We invented tennis string in 1875. And we’ve been innovating ever since, so you can play your best and enjoy the game more than ever. Polyamide twisted fibers in a polyurethane matrix provide a great elasticity for an extraordinary feeling of comfort, making this string very arm friendly. Its great tension hold enables players to enjoy a durable comfort. The exceptional elasticity from twisted fibers brings an extra responsiveness that players expect from multifilament strings. It perfectly suits players with shorter swings that would like to play deeper balls.