All firefighters and officers wear a balaclava under their helmets. This protective hood is regarded as an interface component - providing thermal protection for the face, neck, and ears. Windsor Fire & Rescue Services uses a long style hood so that the protection extends down under the collar of the bunker coat, helping to keep the hood in place. It is a one-size-fits all item. The balaclava must be kept clean for it to do its job properly, otherwise burns, injuries and disease can result. "This is not merely a question of style, neat appearance and comfort, it is a matter of life and death" (from the instruction manual supplied by the manufacturer).