As I'm not super well-versed in all of the specifics around different top-spec frames/etc. - is there an analogue for this seatpost shape that I could use to find a different dust cover? The one with the TanTan was just a flat rubber cover that shifts side to side very easily and it's tight around the post.
I'll take the calipers to the post when I get home and see if I can't cross reference them, but if it's an easy reference to another seatpost that's searchable, please god tell me.