X-Cel Premium plays with nice comfort and solid tension holding. Playing characteristics are similar to natural gut. Includes Air Jet Technology, which encases every single fiber (1,152) by an injection process of a new patented material (a reformulation of polyurethane), which injects and releases air as the string moves. Composition: Multifilament synthetic Gauge: 16 (1.30mm) Length: 40 feet (12.2m) Colors: Blue, Natural
Buy a Babolat racquet and get a set of Xcel for $14.95!