Cambium is the name for the layer of a tree between the bark and the wood. What could possibly describe the world’s first and only true canvas soft shell jacket any better? By bonding 10 oz. cotton canvas with 3% spandex and polyester fleece, you get all the durability of a work coat with all of the fit and mobility of a soft shell jacket. Stretch fabric throughout the coat enhances mobility and breathability and delivers the first canvas work jacket that doesn't feel like a strait jacket! Add-in four zippered pockets and a DWR coating that repels water and oil-based liquids and you get the baddest cotton canvas work jacket ever produced. This jacket has a streamlined fit that mirrors most soft shell jackets, so order accordingly.