The Sidewind series of Bambrella Umbrellas focuses on maximum mobility as they are designed with a 360 degree rotating base and 45 degree tilt so you can position your umbrella to give you shade from every angle. Larger in size, Sidewind offers up umbrellas with a 10 foot square, 11 and a half foot round, and a large rectangular shaped canopy, which can be custom ordered in choice of fabric color. The canopies are made stain, fade, and water resistant for the ultimate in outdoor protection and features a winch system for opening/closing that utilizes 304 stainless steel wire. Like all Bambrella umbrellas, Sidewind uses Moso bamboo in its construction due to its tried and tested structure characteristics which are very similar to that of hardwoods such as teak. This bamboo is 100 percent renewable and recyclable and is tough against the environment as well as good for it. Sidewind umbrellas ship with (2) 154 pound bases and are backed by a 5 year guarantee on frames and hardware.