When the valve on your Exped sleeping mat doesn't fit the inflation device, screw the Exped FlatValve Adapter onto the inflation device. It will work with the Schnozzel Pumpgag, Pillow-Pump, Mini Pump or a combination of Schnozzel and Exped-Packsacks. The adapter connects to Exped regular-sized valves on the mat inflation devices, increasing the diameter of the pump's valve so it will dock onto the mat's valve. Mouthful! You got that?