Filson Large Briefcase/Computer Case (Desert Tan) FABRICOil Finish Rugged Twill, 22 oz. 100 cotton twill, 2 ply by 3 ply, paraffin treated for maximum water repellency LEATHERGenuine Bridle Leather, 100 cowhide, vegetable tanned Middle size of our 3 briefcases Double layer of fabric on the bottom Two-way brass zipper with leather pulls