A set of bunk beds refers to a pair or group of connected bunks, which are wooden frames with a mattress and pillows on top. These types of beds are commonly used in shared bedrooms, dormitories, or other spaces where maximizing floor space is important. The bottom bunk serves as the main sleeping area while the top bunk provides additional sleeping quarters above it. Bunks can be stacked multiple levels high to accommodate more people and save even more space.