This was my 11th bed frame ordered on the internet in the past four years. Generally, none have been overly complicated to assemble and none have been items that would last in my kids teen years. This frame was an absolute stand out. Assembly was so simple. There was a single issue with a pre-placed peg not lining up. I omitted the peg. Even without it, the frame is designed well enough to last fifty years. The wood is most likely pine, but the thoughtful hardware reinforcements will carry it through the years like oak. (As long as it isn’t marred by stickers and punctured by randomly thrown toys). Even with the 12” foam mattress, my 300 pound husband is comfortable and secure when he laid on it. It’s the first self assembled bed frame I would be proud to use as a guest bed as well. Sinus has out done themselves.