A balaclava helmet is a type of headgear that covers the entire face and the top of the head, leaving only a small opening for the eyes, nose, and mouth. It is commonly used by soldiers, skiers, and motorcyclists to protect their faces from extreme weather conditions and debris. There are several synonyms for balaclava helmet that you can use to add variety to your writing. Some of these synonyms include ski masks, face masks, full-face helmets, ninja hoods, and cold weather masks. All of these words refer to a head covering that keeps the face and head warm and protected.