The PURPLELEAF patio umbrella cover fits most of the outdoor patio umbrella perfectly. It is tough enough to protecting your cantilever umbrella, which effectively resistant to rain, wind, hail, snow, dust, fallen leaves, insects and bird droppings. The sturdy zipper, easier to pull up and down, good sealing after closing. Note: Please measure your umbrella dimensions for proper fit. Size may be 1-7mm inaccuracy due to hand measure. S-size for Umbrella: Round : 10 , 11 FT M-size for Umbrella: Round : 12 , 13 FT. Square : 8x8 , 9x9 , 10x10 , 11x11 FT Rectangle : 09x11 , 09x12 , 10x12 FT L-size for Umbrella: Square 12FT Rectangle 09x12 , 10x13 FT