Polyester. Advance to a new generation of string technology with Luxilon 4G. This innovative string offers incredible durability along with the legendary power and spin that you expect from Luxilon strings. To make things even better, 4G offers enhanced comfort and 30% less tension loss than any other polyester. It is the first polyester string to be similar to natural gut in tension maintenance.
*This racquet can string about 17 racquets (depending on skill of stringer and size of racquet).