Midi Bed With Storage These mid sleepers with storage are a fantastic multi-functional piece for kids' bedrooms. These low format beds take a standard UK single mattress and squeeze with plenty of storage beneath the bed. Many come with the pull-out trundle, which is great for sleepovers. Some designs include https://www.bunkbedsstore.uk/products/white-bunk-bed-with-slide-and-pirate-hideout