Along with the new casings comes the Challenge Dune, an all-new tread pattern made for deep sand events like the Koksijde UCI World Cup race in Belgium. It’s a file tread design that’s way more open than the Chicane, so it’s going to float over the loose sand rather than channel it into the center since there are no real side knobs. They say their sponsored pros are running it at lower pressures, too, which really helps with flotation. Как-то так, все таки плыть по песку, а не погружаться в него проще ;)