Originally Posted by JohnBrooking
What if you put it in a pannier or side bag wrapped in a towel? (Maybe I'll try this one of these days. I've been using a backpack for years because I'm too cheap to change, but I am getting tired of it, and now I've got a grocey sidebag as well.)
I'll post a pic of mine loaded up... I've been meaning to do it for a while now, anyway. The only downside is that there's a little more wind resistance because the grocery pannier sticks out further than the backpack does.