The 7 ceramic ball bearings in a new Zircon block overcome inertia from friction so easily, information flows acutely through the sheet. Simply put, trimmers feel and better match sail shape to the new condition–often the difference between winning and not. Don't take it from us, though. Listen to Olympian and America's Cup athlete Riley Gibbs. Riley probably has more experience using Zircon than anyone on Earth. He was in the first test team that used them as part of his Nacra 17 mainsheet system in the run-up to the 2016 Olympics in Rio. Since then, he has used Zircon beta test blocks on his Nacra 17, A-Class Catamaran, 505s, E Scows, and Moths.