It's a seat pack ! And it works damn well if we do say so. Easy to install, easy to use while mounted, and best of all, when it's tightened down properly it doesn't wiggle around under your seat! This pack was not designed for carrying TONS of gear in it, rather it's for carrying that extra gear you might need, or freeing up some space in your other bags. Ideal for puffy jacket and a rain jacket, or a small sleeping bag, or the soft parts of your tent system. Mounts under the rails of any bike saddle, and will even work with MOST dropper seat posts.
As always, if you have any fit questions just shoot us an email!