Giving the Tribe shoes their incredible grip and flat pedal dexterity is an outsole that has been in development for two years, the Gravity Outsole, designed in conjunction with masters of rubber technology, Michelin. When you're hitting technical trails and kickers, the last thing you want is a shoe that slips and slides all over the place, which is why the outsole has features inspired by the ultra-sticky Michelin Jet XCR tire and traction. Maximum Gecko+ Super Sticky Compound of rubber. The tread itself provides stability on your flats with flexibility for a natural feel, extra grip in the center and maximum control in the toe and heel areas.