Dropper seatposts sit in an exposed position right next to the spinning rear wheel where they are subjected to all the mud, dust, salt, sand & debris your tire can flick up. Seatpost Cover offers protection for your Dropper Seatpost against rocks, mud and trail debris while prolonging the lifespan of your beloved Dropper Seatpost. ------------------------------------ • Quick dry polyester fabric • Water Resistant • Sublimated fade resistant graphics • Durable and Light