Thule

This is the second best piece of cycling related gear I've ever bought, only just losing out to my Garmin Varia. Previously I was just using a sports holdall to store all my biking stuff in and it degenerated into a an absolute nightmare of lost stuff. This bag makes it so easy to know where everything is and has plenty of room for cold weather gear, snacks, and maintenance stuff in addition to all the regular gear such as helmet etc. I'm a big fan of the lined pockets for dirty gear and shoes which help eliminate the smells which we can easily permeate from most athletic storage bags