With Wolf Tooth's Valais Sleeve you can also easily attach a saddle bag to your vario seat post. It is injection molded from high quality thermoplastic (DuPont Delrin thermoplastic retains its robust properties down to -29°C) and protects the seat post from wear and tear and the wiper seal from damage. In case of emergency, it also serves as a temporary seat post clamp for you on the road, in case your Vario seat post fails.
The Wolf Tooth development team designed the Valais because they know how much bikers appreciate the freedom to store stuff on the bike instead of putting everything in a backpack. If the saddlebag is mounted directly on the Vario seatpost, there are often problems with lowering and the distance to the rear wheel - thanks to the Valais a problem of the past. The sleeve is simply attached to the seat post.
If the locking mechanism of your Vario sead post stops working on the road, you can push the Valais down on the immersion tube and continue driving until a repair is possible.