If you're not using a Bunkie Board or Bunkie Mattress with our twin over twin Bunk beds‚ here is all the support you need where you need it. Our 100% Brazilian Pine Slats are made from a solid Pine body. This means there is no joining or gluing creating a possible weak point. The pre‐drilled‚ loose slats with no webbing complement our bunk beds creating a rigid‚ sturdy structure. You can sleep soundly knowing the kids are snug in their beds. The kids will sleep soundly due to the substantial support provided by the 100% Brazilian Pine Slats. Pick these up today with your bunk bed to assure a solid night's sleep for everyone. Construction & Features: -MADE IN BRAZIL-