My wife and I use the next larger Topeak bags with the quick connect system on our touring bikes. They are very good bags. Don't know the model name offhand, but it's the one with the velcro removable clear map pocket on the top. Zippers open rearward for use while riding. There's a small front pocket, too, where we keep the supplied shoulder strap. We've used them for 3 years now, and they're great for short shopping trips, too, holding everything needed (wallet, phone, camera, snacks, lock, etc.).