Amazing! Perfect size, very good quality, and even better price! I read where some people used a 10” mattress and DONT DO IT! Get a 8” twin  for both! It’s very little spacing on the top bed but it’s perfect for my blanket to tuck in to.  And I chose to use a quilt being it’s thin for the top bed( it’s currently not pictured) but it’s better than a full comforter or large blanket! Also the 8” twin fits the bottom trundle perfectly! No spacing! Easy instructions. I used a drill plus the Allen wrench provided.   It is definitely Worth the buy!