1L volume (which we stock) the larger version can also accommodate smartphones and battery packs. It fastens securely to the top tube, opening and closing via an easy access one-finger zipper puller. Adjustable attachment points ensure that the Pack is versatile enough for a range of different frames.
The Expedition Top Tube Pack is equipped with an innovative waterproof slider. While it looks like a normal zip, it’s better — it’s fully waterproof. However, it does need a little more care than a regular zipper, as excess strain can cause the rails to detach from the sliding mechanism. In particular, it’s important to not over-pack your Top Tube Pack.