Solinco Hyper-G Soft 16L 1.30 656' Reel Tennis String Reels : The Solinco Hyper-G Soft 16L 1.30 656' Reel is a versatile co-polyester string designed to provide excellent playability and control on the court. A newly developed softening formula generates impressive power and intense spin, giving players the edge they need during the match. Co-polyester strings Designed and shaped to generate maximum power and intense spin