This is our 15ft patio double-sided umbrella which will be your ideal companion and can provide all-day shade enjoyment. Made of high-quality polyester fabric and supported by a metal pole and 12 metal ribs, our patio twin umbrella can withstand long-term use. Double-sided design with 15ft width brings larger shade area and better protection. You can open and close the umbrella effortlessly thanks to its handle crank. In addition, this patio umbrella is equipped with a weighted base which consists of a metal frame, two sand bags and a cover to enhance stability and wind resistance. Enjoy happy outdoor time under our patio double-sided umbrella!Features:Convenient fixation strap to hold the canopy when not useEach sand bag can be filled with 90 lbs sand (sand exclude)Tips:It's better to put this patio umbrella away on rainy days.It's better not to use this patio umbrella on windy days.