The spring is designed to find its original compact folded position

10 tennis string is a high-performance and versatile polyester string designed to generate extreme power and intense spin and bite

The patented design works as a posture correction tool that will help restore the natural curvature of your lower back

Cord stretches up to 30 feet

Comes with Babolat VS 16

Wilson Revolve 17 Quantity_12-Pack The spring is designed toDesigned to give you access to maximum spin, Wilson Revolve 17 tennis racquet string features spin enhancing snap back properties. Youll experience exceptional power while maintaining comfort. Comprised of Crosslink Ester polymer and ultra high molecular weight coating. Features a slick, smooth surface to enhance spin potential.