Coolaroo square shade sails have many different uses from cooling the backyard patio to shading the kids play area to keeping the horses, dogs, goats and other four legged friends cool and out of the sun. The unique Coolaroo fabric provides up to 90% UB block and the woven fabric allows air flow that reduces the underneath temperature up to one third. The combo pack comes with the following attachment accessories: 4 pad eyes, 2 turnbuckles and 2 snap hooks. Assembled size is 17 feet 9 inches square. The fabric has a 10 year warranty against UV degradation.