zippered pockets, originally made of cotton treated for flame resistance, but made of Nomex since the late 1960s, have been used as flight suits since the beginning of World War II. There are two main categories for coveralls: cloth and disposable. Both cloth and disposable coveralls are manufactured with their own unique protective properties including: high-visibility, insulation to protect against cold weather, waterproof, flame resistant to protect against fire, arc resistant to protect against flash fires, and even microporous fabrics when exposed to hazardous chemicals. Japanese politicians have been known to use boiler suits to convey an image of preparedness. Coveralls called student boilersuits are used by university students in some Nordic countries as a sort of party-uniform, with insignia on the back and colour varying with programme and university. The suit is associated with the slasher subgenre, being worn by Michael Myers of the Halloween films. Pete Townshend of The Who frequently wore a white boiler suit during performances and in publicity photographs from 1969-71. The Church of Scientology has punished Sea Org members in the Rehabilitation Project Force by making them wear black boiler suits. See also Flight suit Speedsuit Onesie (jumpsuit) References Military uniforms One-piece suits Safety clothing