I give this a three star rating because it does not sit well on carpet. I ordered this to put in the room my grandchildren use,   nd was so excited to see this as it matched the existing 3 shelf flat folding bookcase already in the room. It fit perfectly at the end, and I was going to buy another for the other end. Unfortunately, no matter what we put on it, books toys, puzzles, it would tip over too easily. We have it in a carpeted bedroom, so maybe on a hard floor it would be ok.  My husband ended up screwing the two pieces together so we could use it.  Good rice, very  simple to assemble.  Came in good condition.  Otherwise very pleased with product.