Currently the helmet bag of choice for military squadrons throughout the Air Force and Navy, including F-35 squadrons, the FlyBoys Jumbo Helmet Bag is designed to provide the best protection possible for the most advance pilot helmets on the planet, such as the F-35 helmet with the Helmet Mounted Display System (HMDS). Constructed from ultra-durable 420D Nylon with 1/2-inch poly-fill for maximum protection and shock absorption. The tightly-woven nylon shell provides exceptional water resistance, while the soft interior lining ensures visors and other delicate components remain scratch-free. The FlyBoys Jumbo Helmet Bag is a tremendous upgrade over the standard military-issued helmet bag.