Galaxy Helmet are designed outer shell made of very light composite Thermoglas, available with an optional integrated mask adapter. Inner shell with effective thermal insulation made of impact-absorbent polyurethane. Internally mounted panoramic visor, suitable for people wearing spectacles. Extremely wide field of vision to the sides and above. Comfortable and easily adjustable inner features made of Nomex. Headband adjustment knob on the outside of the shell, operable with gloves, provides universal fit.