I got the Lund fold up(usa made) I let it get rained on lifetime warranty on the whole cover

 

Cabela's, Amazon, some local stores ought to have it, I know a few back home did. I think we used to buy it at a pool & spa place actually. I use it on my interior plastic too, it's supposed to be better long-term than armor-all and it gives it a nice clean look without too much shine. Armor-all blinds the living crap out of you the first time the sun hits the dash.

My dad uses it for the company trucks that have roll'n'lock covers with vinyl over the aluminum slats, they've all held up great.