This is a universal umbrella canopy. This canopy has been designed to provide a general fit, not a custom fit, for most patio umbrellas. Rejuvenate the look of your patio umbrella. Our 7.5 ft. universal umbrella canopy replacement will fit most standard 7.5 ft with 6 ribs. The ribs length must be between 45 - 46 " long. In order for the item fit your umbrella perfectly. Please follow the instruction in the diagram and picture. You can simply remove your old cover and check from the center hole to the end of the rib pocket. The rib length must stay between 45 - 46 " in order for our cover to fit your umbrella. It it very important to check first before making your purchase because if the rib is too long or too short it is not going to fit perfectly. Why you want to choose our cover: We used double strong thread to sew each line. Our workmanship is much better and stronger than those who are using much thinner thread to produce the cover. We had used the 220D Polyester fabric (fade resistant, UV 30+) on all of our cover which is very thick and strong. Unlike many of the 160g Polyester cover you see in the market. The fabric are much thinner and easy to break when you pull. We value your business and we want to bring you a product that have great "VALUE" and " QUALITY " at the same time.