The Cannondale DownLow Dropper Seatpost is an Air/Hydraulic Unit with 150mm of travel. The diameter is 31.6mm with zero offset and is compatible with carbon and alloy seat rails. The alloy construction has key slot bushings and wiper seals. There is internal routing and comes with a cable remote with cable anchor at lever. There are additional remotes sold separately. Seatpost weighs 570g while the remote weighs 55g each. Available in 340mm, 390mm, and 440mm lengths.