This is a HGU-56/P Aircrew Integrated Helmet System (AIHS), is made of an advanced composite of graphite and Spectra (a high-performance polyethylene),helmet is available in six sizes to fit male and female crew members,the AIHS HGU-56/P is 15 to 20 percent lighter than the SPH-4 flight helmet it replaced, this helmet colour is probably OD Green, size is X_large , helmet ist completely with original install Communication Ear Plug (CEP) , original Maxillofacial Shield, original NVG Mount , boom mic dynamic and original small Battery Pack, helmet with double Visor dark and clear (no skratches), helmet with all cables and plugs, all in 100% original exellent condition !!!!!, Unfortunately no original label present , no cheap Chinese copy , Size Information:by the HGU 56 Helmets is size small more -Medium,size medium more-Large and size large more-X-Large !!!! note that all our items are pure collector items or display items. The items are not tested for real use and have no aeronautical exams or clearances. Use is at your own risk !