Gamma Sports Glide Cross Tennis Strin Gauge: Moto 17 = 1.24mm / Glide = 1.30mm Length: Glide = 20ft Composition Moto = Co-polyester / Glide = Low Friction material with high Lubricity For best results, string Glide Cross String 10 percent higher than your normal cross string. This hybrid combines new Glide Cross String with Moto co-polyester main strings to provide maximum spin with greater power, feel and comfort