Have 3 for sale; one is a little stained from water sitting on it while on a kayak. Nylon is still solid on these — these were never used long-term on boats, just when rain was imminent.

HOWEVER, the gray straps on these fail fast but are not critical to using them for their intended purpose. They are a great solution if you store a boat outdoors or where lots of bugs or critters are present. And skip the $60ish in buying new or neoprene covers.