I have a lot of trees and purchased this mainly to keep the leaves out of the pond. I don’t know whether it’s supposed to be up 24/7 but I left it up because it did such a great job keeping the leaves out. And then it snowed. It was a heavy snow and 24°. Looked out and saw that it was snow-covered and I tried to get the snow off of it but it was stuck to the fine mesh. Ultimately the dome started to collapse. It fell like in a spiral into the pond and froze there. I resigned myself to having to buy another one, which I would merely because of keeping the leaves out, and then it started warming up….melting the thick ice. I noticed it was springing back into shape! It actually came completely up to its original shape like nothing happened! Not sure if it was designed to do that but I’m happy as a clam and would gladly purchase this pond cover again! I can honestly give this product five stars because it did exactly what I wanted it to do and then some!