The Cover is the ultimate in furniture protection. The material, design and construction are simply the best on the market. Outdoor furniture covers need to breathe so that moisture can escape, keeping mould and mildew from developing under the cover. The manufacturer uses technologically advanced materials that are one-way breathable so moisture can evaporate right through the fabric, but water, dust and dirt can not get in. Manufacturer covers are stronger than most vinyl covers, yet light weight. This means their covers are easy to use no struggling to get them on and off. Also, these patio furniture covers are able to handle temperatures from -100 degrees Fahrenheit up to +240 degrees.