These were a great price and easy to assemble, but they are very light weight, and move around ALOT when there is an umbrella in them.  The hole for the umbrella is not reinforced, and there is no secondary point of stabilization for the umbrella lower down as there is with most patio tables.  Those realities caused damage to the wood surrounding the opening.  It is a good decorative piece, but I wouldn't buy it for use with an umbrella....