Gosen Sidewinder 17G Tennis String is a geometric co-polyester made with a technologically advanced polyester resin and mixed with special chemical additive for a uniquely powerful, spin-friendly, and comfortable string. Sidewinder has an oval, or oblong shape to help produce more spin and it plays surprisingly comfortable for a mono-filament string.

Color: Black | Yellow

Gauge: 17 G / 1.22 – 1.24 mm

Length: 40 Feet