Abstract: A self-attaching storage device comprises a storage case having a first edge and a second edge and a third edge and a forth edge, with at least one edge comprising a fold, the storage case including at least one inner storage space. Sealing means may be included for sealing at least one of the first edge and second edge and third edge and for the edge that is not the at least one edge comprising a fold. A bi-stable ribbon spring is positioned on or in the storage case, the bi-stable ribbon spring adapted to include a stable linear configuration and a coiled configuration. Securing means may be included for securing the storage device in a coiled configuration about a user's limb.