+1 on the Ortliebs. heavy? I think you mean they're meant for heavy duty touring.. and you would be right. I have the Ortlieb classic rollers. They are awesome. I use them daily when I commute. Absolutely waterproof. Easy on and off the bike. I don't know how much they cost new... I've heard they are expensive. I got a lightly used pair for $80 off of Craigslist. I'm completely happy with them. I'm sure they will still be functional and usefule 15-20 years down the road.