Healthonline 98% Uv-blocked 20'x16' Rectangle Sun Shade Sail Awning Shelter Canopy Top Cover for Outdoor Patio Garden with Free Carry Bag Green MATERIAL:Constructed of Heavy Duty (185GSM) and Breathable high density polyethylene fabric,portable,washable,mildew and mold free. ULTRA-VIOLET PROTECTION: More than 95% of UV Rays Blocked,the amount of protection greatly reduces the exposure of UV rays which can lead to skin cancer. OPTIMUM VENTILATION: The unique fabric design allows cool air to penetrate the shade sail providing an airy, comfortable, and well-ventilated space. Lightweight,perfect for swimming pool,garden, patio,yards and entrance... can be used for both residential and commercial applications. Includes:20'x16' Rectangle GREEN Shade Sail, tension mounted steel D-rings double stitched into the corners, 4 polypropelene rope, 1 Carrying Bag, 1 Flyer with Installation Instruction