The original mini-pump from the house of SKS is back with a beautiful design and innovative technology. The unique 2-chamber/2-plunger pumping system provides high pumping efficiency in an extremely compact size. Small enough for a jersey pocket. Soft, ergonomic end-piece allows for comfortable pumping with pressure from the palm of your hand. The smaller AIRBOY (length = 172 mm • diameter = 19 mm) pumps up to 8bar/115psi and is suitable for Presta & Dunlop valves.