Mid Sleeper Bunk Bed A mid-sleeper is an excellent choice for those who have smaller or lower ceilings. They are an excellent alternative for smaller children who can't afford one bed. Older children can use the space below to storage space or study. Mid and high sleepers can be used https://www.bunkbedsstore.uk/products/children-s-pine-midi-sleeper-bunk-bed-heavy-duty