One or more embodiments disclose a sealable membrane for protecting portable electronic devices. The sealable membrane includes an enclosure including a material that is reactive to a stimulus. The enclosure includes at least one opening configured to receive a portable electronic device thereinto. The enclosure includes an inside surface and an outside surface. An annular member is insertable into the opening. An outside surface of the annular member forms a seal with the inside surface of the enclosure. The annular member forms a rigid conduit into the enclosure. The annular member is configured to receive a retaining member thereinto. The retaining member retains a sealing member within the annular member. The sealing member prevents access to the opening of the enclosure.