Biltwell Inc. Men's Denim Collared Black Vest, L Heavy 13.5 oz. denim construction with rugged 100% cotton poplin lining Double-stitched at all stress points and critical seams Denim-lined slash pockets with internal snap enclosure on sides Denim-lined patch pockets with button flaps on chest Plated brass grommet inside left breast pocket for ear bud wire