Helmet, A-4-H | National Air and Space Museum https://airandspace.si.edu/collection-objects/helmet-4-h/nasm_A19772789001
Materials Overall: Polycarbonate, aluminium Inventory Number A19772789001 Credit
Materials Overall: Polycarbonate, aluminium Inventory Number A19772789001 Credit
Materials Overall – Polycarbonate Neck ring – aluminum Vent pad and duct assembly: Aluminium
Materials Interior: Rubber/Neoprene compound, aluminium, steel Exterior: Beta
: 9 3/4in. (24.8cm) Materials Polycarbonate Beta Cloth Velcro Anodized Aluminium
Materials Bladder: Rubberized fabric Belt: Elastic (cotton, rubber) Valve: Aluminium
Velcro Wrist: Beta cloth, rubber/neoprene compound Wrist Bearing: Anodized aluminium
Materials Pouch: Beta Cloth, Polyester, Resin, Ink Electrical leads: Anodized Aluminium
Materials Pouch: Beta Cloth, Polyester, Resin, Ink Electrical leads: Anodized Aluminium
Nylon, steel, Velcro Interior: Neoprene-coated nylon Wrist disconnect: Anodized aluminium
Materials Overall: Plastic, Aluminium, Beta Cloth, Velcro Exterior Visor: Gold