Further update.....I'm now wondering if Keystone had so much trouble with these chairs they have quit using them? I checked a more recent 3725 model, and they have changed the chairs back to rigid/solid (non-folding) chairs. We have one on order, due to ours being cracked from the factory. It came....and was rejected by the parts person, because it had a stained seat, and a gouge out of the wood. Sometimes a great idea doesn't always work out!