Quictent 18'x18' Square Sun Shade Sail Canopy Outdoor Patio Garden UV Block Heavy Duty 185G HDPE Top Cover Sand + Carry Bag Constructed of Heavy Duty (185G HDPE) and Breathable polyethylene fabric,portable,washable,mildew and mold free. Ultra-Violet Protection: More than 98% 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 garden, entrance, patio and yards... can be used for both residential and commercial applications. Includes:1x 18'x18' Square Sand Shade Sail (tension mounted steel D-rings double stitched into the corners), 4x Polypropelene Haning Rope,1x Carrying Bag,1x Flyer with Installation Instruction