Midi Bed With Storage These mid sleepers with storage are a great multifunctional piece for kids' bedrooms. These low format beds are made from the standard UK single mattress and put with plenty of storage below the bed. A lot of them come with a pull-out trundle, perfect for sleepovers. https://www.bunkbedsstore.uk/products/panana-loft-bunk-bed-3ft-single-grey-color