Twin over Full Bunk Bed with Trundle and Staircase, Gray/White The best thing about bunk beds is their ability to create a space-saving solution while offering handy storage. Crafted from solid pine wood, this twin-over-full set features a slat design on the guardrails, headboard, and footboard for traditional style. The included staircase with storage cubbies is perfect for tucking away smaller clutter. With the included trundle, this piece is ideal for sleepovers. Plus, with included slat kits, there's no need for a box spring! Dimensions: