Filson Sportsman's Bag (Otter Green) 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 Main compartment: Two-way zipper with leather pulls Large fold-back opening