The website description says "High 400 lb. weight capacity per bed safely holds toddlers to teens". While I can't find a weight limit anywhere on the actual bed or assembly instructions, this bed is not designed to hold that much weight. I would not use this for teens or adults, only small children. I'm disappointed. I had hoped this piece of furniture would last my children for many years but I'll be surprised if it does. The two boxes came in pretty good condition, although one of the main support pieces was cracked. My husband was able to use some industrial superglue to fix it before assembly. Overall, this is a decent bed for children. We bought 10" memory foam mattresses for both the top and bottom bunk. They both fit and the top guardrail is still high enough for safety. We have not assembled the trundle yet.