super sturdy, no warping or bulging. I bought 2 of these raised beds and the first one took about 75 minutes to put together, following the instructions. The second one I put together in roughly 30 minutes, assembling the all corners first and then connecting the middle pieces. Although it is a BIG bed, I had no problem carrying it by myself to the desired location. I needs a little over one sq yard of soil, but the low sides allow to dump directly from a wheelbarrow. I am impressed with the quality for this price. The included hardware had all pieces needed, even a pair of gloves.