Yescom 13x10FT Outdoor Patio Rectangle Sun Sail Shade Cover Canopy Top Shelter W/Rope Effective Harmful UV blocking Virgin HDPE Mayerial With No Smell - More Durable And Better Than Recycled HDPE Air Circulation Possible - Specially Knitted High-density Polyethylene Fabric Environmental Temperature Below The Shading Sail Can Be Lowered Up 6.5 Degrees Centigrade Applicable for all season - Mildew and mold free