XR1 builds upon Tecnifibre Multi-Feel with even better feel and additional comfort. The rectangular monofilament core provides improved tension maintenance over Multi-Feel. XR1 provides a soft feel from the 1,125 multifilaments, compared with Multi-Feel's 985 composite multifilaments. String also features a silicone coating for increased durability. Length: 40 feet / 12.2m Gauge: 16 / 1.30mm Construction: 1,125 Composite multifilaments surround one PHP rectangular core and string is immersed in Polyurethane. Features a Anti-Abrasion Coating of Silicone Pyrogene Lubritec. Color: Natural The Tecnifibre XR1 16 Tennis String is now available online in India.