This patio umbrella base cover is constructed from 600D heavy-duty waterproof Oxford fabric with double-needle stitched seams for long-term durability. It fits most square umbrella bases up to 36 in. by 36 in. by 8.5 in. and provides year-round protection against rain, sun exposure, and dust. The cover features a sturdy zipper for quick installation and removal without disassembling the stand, plus an elasticized bottom hem with adjustable drawcord to ensure a secure fit even in windy conditions. Its design prioritizes practicality and weather resistance over aesthetics, making it ideal for residential patios, commercial outdoor spaces, or seasonal storage. The material resists fading and mildew while maintaining structural integrity through temperature fluctuations and repeated use. No tools or additional hardware are needed for setup, and the cover folds compactly when not in use. It functions equally well on concrete, paver, or deck surfaces and accommodates standard square cantilever or offset umbrella stands. Color: Black. Material: Polyester.