Polyesters

Provides individual fit for a wide range of sizes

combines an elaborate support system with all the sport performance features of a high-end running shoe

This string provides premium durability along with increased control and spin potential

Natural Gut string

Babolat RPM Blast 15L Size_105710.5 Extra Wide (4E) PolyestersIdeal for big hitters looking for explosive spin and a powerful punch, Babolat RPM Blast tennis string is a co polyester string with a fast and powerful response. Designed to maximize spin potential and durability, this string is the premier choice for chronic string breakers. This is the preferred string and gauge used by Spanish tennis phenom Rafael Nadal. High density co polyester construction provides a fast and powerful response with great ball