"This ShelterLogic Shade Sail will protect your family from harmful UVA and UVB rays. Aesthetically pleasing and easy-to-install, this 16ft. triangle ShelterLogic shade sail can be mounted in any direction you prefer. Take it with you for camping, sporting events, pool parties and other occasions that require sun protection. In sturdy polyethylene with reinforced stitched corners and steel fittings, this sail is made to last. Polyethylene allows wind to sail through it and won't create pooling or stress points during or after a rainfall. Reinforced stitched corners and steel D-ring fittings deliver a secure mount. Protects from UVA and UVB rays Easy to install in any direction you prefer Perfect for camping, sporting events, pool parties and more Sturdy polyethylene with reinforced stitched corners and steel D-ring fittings for durability and security"