Quictent 98% UV Blocked 185G HDPE 18 x 18 ft Square Sun Sail Shade Canopy Top Outdoor Cover Patio Garden + Carry Bag Sand Constructed of Heavy Duty (185GSM) 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:18'x18' Square SAND Shade Sail, tension mounted steel D-rings double stitched into the corners, 3 PE ropes, 1 Carrying Bag, 1 Flyer with Installation Instruction