You'd better take care of that Austone. I don't believe they're available anymore. I've been using them on my Road Stars (as they were the only ct's that would fit), for the last 150,000 miles. I usually get 25,000 miles on them.
When I heard that they were disappearing, I ordered another one of them. Universal Tire had 12 left.
So I'm good for another 50,000 miles.
And yes, it's stored in a cool dark place, so it should be fine when I need it.