The seat bag is perfect for both the daily commute and longer bike rides and expeditions. It’s a great bike seat bag to store things you won’t necessarily need to reach for mid-ride, like tools, tire levers, mini pumps, spare tubes and a patch kit.It’s also large enough to fit in a light jacket, a beanie, or other thin layers to cover you in case of any temperamental weather mid-ride. http://www.superoutdoorgoods.com/bike-bags/