The base for this umbrella is NOT as pictured on the site and is not offset to support the umbrella while it is up. It requires screws in the ends of the base to anchor to a patio or in my case with a concrete patio I now require sand bags if I want to have this umbrella up to hold the base down so the umbrella does not tip over. I would not purchase this umbrella unless you have a wood deck to anchor it to or you want to look at a couple of sandbags holding the base down.