Quictent Outdoor Heavy Duty 18' Triangle Patio Garden Sun Shade Sail Canopy Top Cover 98% UV-Blocked w/ Free Carry Bag Sand Blocks 98% of UV, reduces the temperature under the shade Easy to install, Washable & Mildew free, Leisure & Portable Made of Heavy-Duty (185GSM) and Breathable Polyproplyene Suits for Entryways, Patios, Pools, Yards, Children's Play Area etc Includes 1 SAND Shade Sail with 304 Stainless Steel D-rings in each corner, 3 PE ropes, 1 Carry Bag, 1 Flyer with Installation Instruction