Absolutely love this bookcase! All solid wood, no particle board with veneer. I read some of the other reviews before making this purchase, and many complained that the instructions were hard to follow, but when it came, before I did anything I read the instructions thoroughly and even read them a second time, and found them very easy to follow. holding it all together while putting the sides on was a bit of a challenge, but I found that by using a tie down ratchet strap I could hold it together while adding on the sides.the only reason I didn't give it 5 stars was that the locking pins have to be completely perfectly straight while assembling, or it can cause the wood to chip when you tighten it up. Other than that, love the bookcase!