500 Denier / 180g polyester material, with 95% protection against UV rays.
Make sure your umbrella is 6 ribs/6 panels, each ribs length must measure 43" to 45". Make sure the distance between adjacent rib ends is 45" when the frame is fully opened. Make sure the umbrella is 90" to 91" in diameter when the frame is fully opened. The diameter of the hole at the very top is about 1/2 inch. You can cut the hole bigger to fit your frame mostly.