Pine Wood Short Bunk Bed Vertical Bed is Constructed from selected solid pinewood and iron alloy bolts keeps the whole bed sturdy and wobble free. The upper bunk has high rails to ensure secure. You can rest easy knowing your kids are safe and comfortable. Mattress can be put on the slats directly,abandon box springs,you can save more money and time. So don't hesitate, it's a good choice for you! Feature Bullets