The HGU-25 helmet was developed specifically for the flight decks of all US aircraft carriers, this unique bump helmet provides impact protection while using hearing protectors or noise-attenuating headsets in one of the most hostile environments on earth. The HGU-25 Flight Deck Helmet has these components: A suspension liner, a front and a back shell assembly, energy-absorbing impact pads & Aural sound protector. This genuine U.S. helmet is in very good issued condition and is complete with sound protectors and chin strap. It retains its original manufactures label and was made by David Clark Company USA and is dated May 1987, size 7 medium.