Of all the types of outdoor umbrellas, cantilever umbrellas offer the best shade coverage. This is because you can get them to rotate 360 degrees to follow the sun's positioning throughout the day. This means, from morning to afternoon, you can move the umbrella along with the direction of the sun for all-day comfort. The rust-resistant aluminum frame with cross steel stands the effects of inclement weather. The frame features reinforced joints and a strengthened crank mechanism for durable support and smooth adjustments. When you choose a solar umbrella, you don't have to worry about wires and electrical outlets, and you don't have to pay a high price for a wall sconce or buy a chandelier to put on your patio. And of course, the cost is not an issue - because solar energy is free. Before you complete your purchase, add an umbrella base to your order. You don't want the excitement of getting your outdoor umbrella in the mail to be overshadowed by disappointment when you can't use it until you order the base.