I tested out the Bike Cover from Empire Covers. I found that the Empire Rain cover is very heavy duty and well made.
I suggest getting the rain cover with the stuff sack, which provides better storage if you take it on your weekly or daily commute or long haul tour. On a tour the Empire Rain Cover might be slightly too heavy. Rolling light weight is everything on a tour if possible.
100% Waterproof and fully breathable!
This top of the line bike cover is made out of premium nylon that is both 100% waterproof as well breathable, so you’ll never have to worry about leaving your bike out in the rain again! This cover is great for both indoor and outdoor use and is designed to protect against rain, snow, sun, dust, and rain. Cover is fully breathable to protect against mold and mildew. Made out of heavy duty nylon. Cover is black in color and comes with 3 year warranty.