Tourna Grip is the original light blue grip and the choice of professionals. Used by the legendary Pete Sampras, Andre Agassi, and Jim Courier as well as current pro's like James Blake, The Bryan Brothers, John Isner, Sam Querry, Andy Murray, Gael Monfils, Gilles Simon, Venus Williams, Dinara Safina, Elena Dementieva, & Maria Sharapova, just to name a few. The secret is that Tourna Grip actually performs better with moisture when all other overgrips on the market get slippery with moisture.