I knew I was going to have to buy 2x4s to build this bench so I went and bought some nice cedar ones.  My problem with the purchase was that the screws that it came with were not the ones you needed in the instructions so i had to go buy all the screws. It was suppose to come with 36 of the 10x1" screws and 2 of the 3 1/2" pivot bolts. It came with a mixed bag of screws and only 8 of the 10x1" and the pivot bolts were 2 1/2" long so they weren't even close to long enough.  One of the benches when I put it in table position is a little wobbly.  I do love how they look though and happy I did buy them.