The umbrella is extremely heavy and while it did say it needs about 120 counterweight, it did not make it clear that you cannot use the x-base alone. The holes are square so finding a good bolt was challenging. We have it secured now but even bolted it still feels unstable, so we also have weight on it. If you don’t have the ability to bolt it down, you’ll need a (separate) huge sand-filled base. Otherwise easy to assemble and use once that hassle was out of the way.