A top-bar hive is a single-story frameless beehive in which the comb hangs from removable bars. The bars form a continuous roof over the comb, whereas the frames in most current hives allow space for bees to move up or down between boxes. Hives that have frames or that use honey chambers in summer but which use similar management principles as regular top-bar hives are sometimes also referred to as top-bar hives. Top-bar hives usually include one box only, and allow for beekeeping methods that interfere very little with the colony.