Belstaff Jacket Black Tunstall. The classic Tunstall Blouson jacket offers a full zip fastening to the front with a popper fastening to the collar and hem. Presented in a sleek black colour-way, the jacket offers three outer zip pockets. The Tunstall Blouson is crafted from a resin coasted denim material, offering a formal leather look with a lightweight denim finish. The statement Belstaff badge is shown to the sleeve for an iconic touch.