The Azzurro Parasol has an ingenious system, you simply slide the Parasol up and, due to canopy tension, it can remain in place. You can adjust the height of the umbrella by simply turning the knob, you can also tilt the umbrella against the sun. This umbrella is afflicted with a high quality 100% olefin fabric, able to withstand rain and maintain its color for a long time. It also has UV 50+ protection, meaning it is very resistant to ultraviolet rays. The structure is lightweight aluminum and consists of 2 parts. When the umbrella is not in use, we always recommend using a protective cover. Base available to be ordered separately.