Quote Originally Posted by BleeckerSt_Girl View Post
I have one of those special Brooks rain covers- I heard they are not too waterproof (so why bother?)
Actually, they are reasonably waterproof, and infinitely more comfortable than riding on a slippery plastic bag.

I used my Brooks rain cover during the deluges that I encountered on my tour of the Olympic Peninsula & Puget sound and my saddle fared just fine.

Though I do agree that while you are off the bike you should cover the saddle with the plastic bag for extra protection.