Midi Bed With Storage These mid-sleepers with storage make a great multi-functional piece for kids' bedrooms. These beds with a low-profile are made from the standard UK single mattress and put with plenty of storage below the bed. Many come with a pull-out trundle, perfect for sleepovers. Other designs include https://www.bunkbedsstore.uk/products/white-cabin-bed-mid-sleeper-bunk-noa-nani