Abstract: A device for inhaling an active agent is provided that can be moved from a first configuration to a second configuration. The device comprises two flexible substrates and a membrane located between the two flexible substrates, and the two flexible substrates being connected at two opposing edges and unconnected at two further opposing edges. An active agent provided on the membrane may be inhaled by a user when the device is in the second configuration. The membrane comprises a first portion and a second portion, where the second portion prevents passage of active agent through the membrane. A method of using the device is also provided.