Belstaff Jacket Steel Grey Tunstall. This silhouette is crafted from heavy denim and is a simple subtle style from Belstaff this season. The Tunstall Blouson is a iconic style, with comfortable quilted lining for a soft fit. With its resin coated appearance it gives a leather look but benefits as is it is more lightweight. The jacket has three exterior pockets and a closed popper to the collar and also to the hem with branded Belstaff buttons.