We have a very large, west-facing deck. The sun is brutal in summer making it hard to enjoy being out there. I was thrilled to see this shade sail because that is exactly what we needed. The craftsmanship seems to be really good, the seams appear to be well sewn together. The material also seems to be durable to withstand being exposed to the elements, but still light enough we don't have to install heavy duty posts at the corners of the deck in the spring (its January now). We're really looking forward to using this to extend our outdoor time! I'm only sorry I can't unpack and install it now. The only concern I have is the lack of cardboard packaging for shipping. During transport the plastic was snagged but thankfully the item itself wasn't damaged.