Here Are The Best Suspension Seatposts For Touring & Bikepacking - CyclingAbout.
Cane Creek eeSilk Aluminum Suspension Seatpost - Living 360 Bike Shop | Boerne, TX
Trek Pavement Suspension Seatpost | Trek Bikes
Amazon.com : Kinekt Bike Suspension Seatpost, LR Lightweight Alloy Seat Post for Road, Gravel & Electric Bikes, Bike Seat Shock Absorber Adjusts to Weight and Riding Style, Quick & Easy Set-up, LR