I previously posted a review and ga e the cover 5 stars. My oversight. As I said the cover has torn away from the zip on previous covers I have bought.
I have had three covers and each one of them has come apart from the zip.
Maybe a heavier plastic could be considered
After hail destroyed not only our greenhouse but seedlings inside we didn't want to have to replace the entire thing. Thankfully that we could just buy a new cover, as the structure itself was fine. Back to having seedlings again. Please no more hail.