Yonex POLY TOUR DRIVE SOFT tennis string is a high-powered polyester string which plays with greater comfort than POLYTOUR DRIVE. POLYTOUR SOFT offers easy access to powerful spin, even at slower swing speeds. This is the perfect string for players of all swing speeds looking for a shaped string at an affordable price.Gauge: 16L (1.25 mm)Length: 39 ft (12 m)Composition: Co-polyester MonofilamentColor: Flash Yellow