Babolat's Addiction string is perfect for player's looking for the right blend between power, comfort and durability. This multifilament string has a central core with polyamide-fibers and a polyurethane matrix to unify power and comfort. PTFE fibers provide increased durability thanks to the very low coefficient of friction in the material. Polyurethane (PU) multifilament + 5% Polytetrafluorethylene (PTFE) fibers. Comfort and durability. Reel: 660 ft/200m. This reel will string about 17-18 racquets. Babolat Tennis String 243115-17