It wasn't raining when you went in to class, but unfortunately campus is a soggy mess now. Pull out the Blackburn Barrier Seat Fender, install it with a quick fold and tug (no tools necessary), and cruise back up to the dining hall without ended up with mud all the way up your back. This little gadget weighs next to nothing, and attaches to almost any saddle rails to ensure you can throw it on whatever your ride of the day is.