Wilson Ultra XP 100LS Tennis Racquet - Unstrung Wilsons range of Ultra XP 100LS racquets are the most powerful available to players today. This racquet will be shipped unstrung. Headsize: 100 sq. in. / 645.16 sq. cm.; Length: 27.25in Strung Weight: 10.8 Ounces Balance: 340mm (2 pts HL)