After assembling umbrella and attaching the base, of course it immediately started to fall over. That is when I saw the paragraph in the instructions that says you need to purchase extra weights or put sand bags on the cross shaped base that the umbrella is secured to. Really?  Sand Bags?  Maybe this statement should have been listed on the advertisement that I bought the umbrella from. So then I ordered a base that could be filled with 50 pounds of sand, went out and bought the sand, filled the base with the sand, reinstalled the umbrella, and of course, the it immediately fell into the pool. My wife absolutely loves the color of the umbrella and how it looks with the other furniture on the patio, so now I'm in the process of building my own four foot square base which I'll have to paint and fill with weights and/or sand.