The Wilson Steam 99 S tennis racquet is optimally designed to be a leading racquet in terms of spin generation and control. This is due to the inclusion of Wilson’s Spin Effect Technology which utilises a truly unique string pattern made up of more main strings than cross strings. The idea behind this is to enable the main strings to flex more and snap back more violently, adding a huge amount of kick to spin shots as the ball leaves the racquet head. The 27 inch length also assists with spin generation as well as adding not inconsiderable power to the equation. This length and optimised spin technology is also a real benefit off the serve, allowing you to get heavy action and big kick off your serves. If you are a good player who likes to experiment heavily with spin in your playing style then this racquet will knock your socks off.