I built an open pergola on the patio with lights around the edge. Perfect mood at night but too hot in the sun during the daytime. I was looking for some much needed shade. The afternoon sun made it almost impossible to sit out there. This sun shade sail was the perfect solution. It was the right size to cover the entire top my 8 x 10 structure. It is made of a durable fabric and has rings sewn into each corner to easily attach it to the hooks I installed and easy to remove if need be. The color is perfect, so it doesnt darken the underneath area. Its bright and airy and were loving our new outdoor space.