How to usethe DAHON PostPump | Some of our bikes come with a pump integrated right into the seatpost. Here's how it works: #foldingbike #cycling #freedomunfolds | By Dahon Folding Bikes | Facebook
NEW Silver Dahon Seatpost Pump use your seat post as Pump 33.9 mm diam 51-1-02 | eBay
Dahon PostPump - Full size SeatPost Pump! REVIEW!!! - YouTube
Dahon BioLogic Seatpost Seat Pump 33.9mm x 580mm Black - Get Me Fixed
Pump bicycle tires with your seat: BioLogic PostPump 2.0