90-95% protection against UV rays, easy to clean, made of polyester, easy to assemble, woven polyester, 285 gm2 heavy quality, can be opened and closed with the supplied roller and strut set, AISI 316 stainless steel assembly kit included, water permeable, because of the open structure water can get through, lower temperatures under the sun sail, with the protective cover the folding sun sail can be protected in winter