Amazon.com : Kinekt Bike Suspension Seatpost, CR Superlight Carbon Seat Post for Road, Gravel and E-Bikes, Adjusts to Match Weight and Riding Style, Quick and Easy Set-up, LR | 27.2mm | 330mm :
Adjustable Twin-Bolt 2-Bolt Carbon Fiber Seatpost for Bicycles, Bike Seat Post for Road Gravel Hybrid and E-Bikes
No.7 Seatpost | Whisky Parts Co
LEXON Ultralight 145g/155g Bicycle Seatpost Carbon 27.2/31.6mm Two Sizes MTB/Gravel/Road Bike Seating Tube 350mm Length Seatpost - AliExpress
CF Allroad Pro Carbon – Ergon Bike
PRO Discover Carbon Seatpost | Pro Bikegear
PRO Discover Carbon Seatpost 31.6 x 400mm 20mm O/S Gravel Mountain Bike MTB Road | eBay