My son and I were pleasantly surprised at how easy it was to put together.  The quality is really good with details like cut out at the base in the back so the bookcase will sit flush against the wall over the baseboard. The materials that they are made of was the most important part of their quality.  They are not made with any carcinogenic materials like most particle board coming from China are.  These bookcases were made in Denmark where safe materials are used in their manufacturing. I really like the quality of all my purchases from Wayfair along with the ease of ordering and the ease of delivery.  The FedEx person was pleasant and kind enough to bring them just inside my front door.  Since I am disabled this was very helpful.