The cover shed water very well for the first 4-6 months but after that it's water resistant surface appears to have worn off. Nevertheless, it still sheds almost all the water the falls on it well, but there are a few holes. However, the holes may have been caused by our neighbor's cat which took a liking to sitting on it for a few weeks - and therefore I'm not writing a worse review for it since it may have less to do with the product than the cat, but I'm not sure it was the cat's fault either.