An easily adjustable seat post popular with bikepacking riders.
Here's what Velo Orange Say:
The seatpost is internally ovalized to reduce weight (295g), and the head is integral with the post, not pressed on as on many modern posts. These factors combined makes for a super strong and light perch.
All forms of adjustment can be done with a single 5mm wrench to the side of the clamping mechanism.
27.2mm x 400mm. Maximum height (above the min. insert line) is about 300mm. Available in Polished Silver and Noir.