Alpha Industries Men's Helmet Bag 100% Nylon Imported Dry Clean Only The aviator's helmet bag is a traditional military helmet bag that is made of flight nylon The interior features 2 main interior compartments pockets, with 4 smaller interior pockets Top zip closure and removable shoulder strap; can be carried briefcase style or worn with removable shoulder strap Two exterior Velcro and snap closure pockets for extra storage. The bag comes with two genuine alpha industries patches that are removable. Can add one's own patches to the outside Velcro panels