Durable Material:Made of high duty weatherproof 210D Oxford Cloth, which is more waterproof than normal material 420D or 210D, can withstand up to 2000 Pa water pressure. Weatherproof and Water-resistant: BE READY for anything Mother Nature can throw at you!All Weather Protection! Air vents: There are two air vents with mesh barriers promotes air flow to reduce inside condensation and wind lofting. In addition,you will be surprised at how easily the cover slipped over sofa with two handles. Wind-resistant:Outdoor sofa cover have 6 pc click-close straps that snap over the legs to secure cover on the windiest days and all round drawstring bottom with cord locks for added security to make it won't blow away in the wind. The cover is designed to protect your outdoor furniture from dirt, dust, rain, snow, ice and extreme temperatures.