Very solid. Nothing cheap at all about these, aside from the price. No uneven leg lengths nor flimsiness. Stacks and unstacks effortlessly, and properly, on top of eachother, so the stack doesn't get tippy as it gets taller. Cushions are very firm; the chairs are rated for 500lb guests, after all; but still has enough give not to feel like an uncushioned wood or metal chair. Initial softness improves quickly with use.