Midi Cabin Bed When it comes to selecting kids beds, there's a lot of choice out there. One design stands out: a midi-cabin mattress. These multifunctional designs give you the space to sleep storage, study, and play all in one. The best ones even include pull-out trundle beds for sleepovers. https://www.bunkbedsstore.uk/products/solid-pine-naples-bunk-bed-with-underbed-storage