* Extra duty ideal for longer play on hard court surfaces * Exclusing Dura-Weave felt from Wilson provides greater durability and improved performance * Ideal ball for high school and recreational players as well as tournaments and fundraisers * With the purchase of this product, Wilson makes a donation to the Breast Cancer Research Foundation (BCRF) to support research for a cure for breast cancer * USTA and ITF approved * Wilson is the Offical Ball of the US Open and the Australian Open Grand Slam Championships