The bag is sleek, compact, and makes an aerodynamic appearance. The Teflon-coated nylon used is very high quality and the processing could not be better. This can be seen for example in the design of the holder. It is bolted to the saddle straps and has a robust click mechanism by which you can quickly and easily be separated from the holder pocket. Additionally there is a Velcro fastening, with which the bag is attached to the seat post, so they do not vibrate while driving.
The bag has two circumferential zippers. The top zip opens the bag; the lower is in the open state to the volume of the bag to enlarge an estimated one-third. Both zippers are smooth, and they do not go up automatically while driving.
Under the saddle of my MTB the Topeak Wedge Pack II is not bulky in size M, yet additionally my little cable lock, LED front bicycle tool my Swiss Army knife matches the supplied rain cover u. Taillight, u. In. For this, the bag does not even have extended or enlarged. Once I use it in full size, fits more to my Gopro Hero3 incl. Housing. When I park the bike short and the lock is used (therefore not in the bag), can even purely my Garmin GPSMAP 62. I then the "Attachments" in the pocket and can take any comfort, for example, in the beer garden, shopping, etc. The Topeak Wedge Pack II is a real space saver!
I am particularly impressed the thoughtful details such as:
1. The bag is expandable with a zipper.
2. When closed, the two slides of the zippers disappear in an envelope and are thus u rain. Dirt largely protected.
3. On the outside, a circumferential reflective stripes attached
4. A specially designed bracket allows mounting a taillight
5. The cover and base are made of reinforced material, and therefore quite stiff. Thus, the bag falls compared to models that are made of soft material, not in themselves.
6. The bracket is screwed to the inside of the pocket with a large plate, so that the material is not charged, because the suspension is spread over a large area.
7. Rain Cover included
Conclusion: Better you can not do that!