Yescom 12'x 12' Square Sun Shade Sail UV Blocking Outdoor Patio Lawn Garden Canopy Cover Desert Sand 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