The Yonex POLYTOUR FIRE Tennis String in red is a high-quality string made in Japan by the renowned brand Yonex. Yonex Poly Tour Fire is a firm, round co-polyester string designed for intermediate to advanced players seeking high control, significant spin, and durability. Featuring Silicone Oil Infused Filament (SIF) technology, it offers superior snapback for heavy spin and a dampened, lively feel. Perfect for players looking to improve their game with a reliable and top-performing string.