Waterproof Car Cover

I unfortunately have to keep my '73 Swinger outside and had a hard time finding a nice waterproof car cover for a decent price. I found this one at Jegs which does a great job keeping the rain/sun out, but is cheaply made.

JEGS Performance Products 90141: Heavy Duty Car Cover X-Large | JEGS

Anyone have any suggestions on a nice car cover that won't break the bank? Thank you!