Awhile back when school was about to start up in the fall i bought a new bag and even though i havnt had the chance to actually use the bag while riding, thats its intended purpose. i bought the bag due to the hi-vis material, and the extra protection it provides on the back. As well as its ability to carry your helmet with you. I have fit my helmet in the bag, and i will say that it looks reaalllly goofy walking around with it in there. But i feel safer with my helmet with me than on my bike.