Introducing the Woodland Twin Over Twin Staircase Bunk Bed: Where storage and fun unite! With a secret bookcase inside the staircase, tidying up becomes an exciting adventure. No need for tricky Bunkie boards ? two mattress-ready slat kits are included that will accept a mattress height of up to 9 inches. This bunk bed isn't just a sleeping space; it's a customizable haven. Choose from colors like white, walnut, and grey, and add cool options like a trundle or bed drawers for more storage. Plus, stay charged with the turbocharger. Parents, get ready to transform your kids? room into a storage-packed, dreamy paradise with the Woodland Staircase Bunk Bed!