Use Exped pumps with almost any mat! The Universal Valve Adapter adapter connects Exped's pumps (Schnozzel Pumpbag, Pillow Pump, Mini Pump and the Schnozzel-equipped-packsack) to just about any 'stick-out' valve and any flat valve on the market. To use: just slip the applicable adapter over the mat’s stick-out valve and leave it there so it is not lost. To connect with the pump just push it onto the pumps outlet port. In the case of a flat valve stick the respective silicone tube into the hole of the flat valve and onto the pumps outlet port.