Here Are The Best Suspension Seatposts For Touring & Bikepacking - CYCLINGABOUT
GANOPPER Suspension Seatpost 25.4 27.2 28.6 30.4 30.9 31.6 40mm Travel Damping Seat Post Alloy Seat Tube Bike Part 30.4*350mm
DNM Bike Seatpost with Shock Absorber 27.2mm/30.9mm/31.6mmx350mm Suspension Seat Post CNC Aluminum Alloy Bicycle Seat Tube - AliExpress
GEWAGE Suspension Seatpost for Bicycles - 27.2/30.9/31.6 X 400mm Shock Absorbing Bike Seatposts - Lightweight Aluminum Alloy Seat Post for MTB Road Bike BMX eBike - Walmart.com