Toughened glass is made from annealed glass, either by thermal tempering or chemical processing. Chemical processing results in increased toughness compared with thermal toughening and can be applied to glass objects of complex shape. Toughened glass is typically used architecturally. Safety glass, which comprises toughened (tempered) glass reinforced with polymer laminations is, of course, standard in autos. Aerospace applications generally employ combinations of polymer, glass and other materials.