>>1360593Dude don't buy Jamis. They have notoriously loose seat tubes and issues with slipping seatposts.
If you search on the internet for seatpost slip, like 40% of the cases will be Jamis, which makes them massively overrepresented considering how many brands there are out there.
I've seen a post on Reddit from a guy claiming to be a mechanic and confirming that it's a common issue with them - he could be lying but I don't see a reason why he would. I myself had a Dragonslayer which was supposed to take 31.6 seatpost. Those kept slipping so as warranty service (which is also a joke with Jamis) they put in a 31.8 seatpost. WHICH WOULD STILL SLIP. The only way I managed to hold it in place was a 2-bolt downhill clamp that grabs both the seattube and the seatpost. I feel like the upper part of the clamp is the only thing that keeps it from slipping down. I can't give you English results but on my local bike forum there were at least 3 people with the same issue.