Glosiry-Extra-Strong-Canvas Male Bag With Flap. glosiry extra strong canvas messenger-shoulder man bag is made of strong canvas material with sizable compartment with both internal and external zipper and a black flap with double zipper to give it that wonderful finish. Made of canvas material. Main compartment secured with zipped closure. Zipped pocket with two mini pocket under flap. Zipped pocket on the inside and zipped pocket on the rear.