Icon Chamonix Motorcycle VestALL BUSINESS, NO BS All business, no BS the denim vest is synonymous with motorcycling, so we've added our ICON flavor to a classic piece. The Chamonix vest is built for the ride. Regular denim is no match for get offs at speed, that's why we use abrasion resistant Cordura denim for the chassis and reinforce it with 1. 2 1. 4mm full grain leather on the shoulders. Like all ICON vests, the Chamonix comes with a D3O Viper back CE certified impact