Anti-wear 30% Thicker Than Others This sun shade sails are thicker than others, which filters the sun and gets cool air flow on deck, pergola, patio, backyard, pool or other places you want to keep cool. 185GSM HDPE Material It is made of 185GSM HDPE material. The breathable material allows air to go through freely, which is well ventilated. In addition, the sun shade sail will not droop in raining days. Exquisite Workmanship D-rings are the essential parts of the sun shade sail, which makes the installation more easier. Dense stitched seam on each side and double layer webbing ensures this shade sail survive longer