High quality, high durability, cover.
Got tired of a dusty scope and having the bungecord semi-secured old bedsheet blow off in the wind. This TeleGizmos scope cover is just what I needed, long before I realized I did. OPT service was just as one would like it.
This is my third one and will keep buying them as long as they're available. They do have a lifespan, in my case about 5 years. I keep a 15 watt gun rod heater underneath to keep condensation from forming. The inside will eventually start flaking off and it's time to buy a new one. Never a worry about the elements or hail, it's very thick.