Ytex Octo Twist is pliable co-poly with a twisted gear shape. This one has a comfortably crisp feel and provides the spin artist with a very tight grip on the ball. Our TW playtesters were very impressed by this string's spin potential. Full swings resulted in heavy balls that explpoded off the court. A great option for the poly player looking for a little extra feel along with an impressive combination of spin and control.