A case for enclosing a personal electronic device and one or more cards comprising: a personal electronic device portion; and a card portion; wherein: the personal electronic device portion includes a bottom surface and side surfaces joined to the bottom surface and extending upward therefrom, thereby forming a first fitted cavity and a top surface of an adjacent second fitted cavity, wherein the first fitted cavity is configured to accept and retain the inserted personal electronic device such that the bottom surface of the personal electronic device portion covers a bottom surface of the inserted personal electronic device and the side surfaces cover at least a portion of side surfaces of the inserted personal electronic device; and the card portion includes a bottom surface and side surfaces joined to the bottom surface and extending upward therefrom, wherein the bottom and a first portion of the side surfaces of the card portion form the second fitted cavity and a second portion of the side surfaces of the card portion substantially cover the side portions of the personal electronic device portion, wherein the second fitted cavity is configured to accept and retain at least one card and at least one of the first portion of the side surfaces includes an opening via which the card is inserted in the case; and characterized in that the card portion further includes: a retaining feature to exert pressure on the one or more cards to retain the one or more cards in the card portion, wherein the retaining feature comprises a deformable flap that extends from the personal electronic device portion into the second fitted cavity of the card portion, wherein the deformable flap exerts pressure by friction on cards and thereby retains any cards that may be inserted into second fitted cavity. a personal electronic device portion; and a card portion; wherein: the personal electronic device portion includes a bottom surface and side surfaces joined to the bottom surface and extending upward therefrom, thereby forming a first fitted cavity and a top surface of an adjacent second fitted cavity, wherein the first fitted cavity is configured to accept and retain the inserted personal electronic device such that the bottom surface of the personal electronic device portion covers a bottom surface of the inserted personal electronic device and the side surfaces cover at least a portion of side surfaces of the inserted personal electronic device; and the card portion includes a bottom surface and side surfaces joined to the bottom surface and extending upward therefrom, wherein the bottom and a first portion of the side surfaces of the card portion form the second fitted cavity and a second portion of the side surfaces of the card portion substantially cover the side portions of the personal electronic device portion, wherein the second fitted cavity is configured to accept and retain at least one card and at least one of the first portion of the side surfaces includes an opening via which the card is inserted in the case; and the personal electronic device portion includes a bottom surface and side surfaces joined to the bottom surface and extending upward therefrom, thereby forming a first fitted cavity and a top surface of an adjacent second fitted cavity, wherein the first fitted cavity is configured to accept and retain the inserted personal electronic device such that the bottom surface of the personal electronic device portion covers a bottom surface of the inserted personal electronic device and the side surfaces cover at least a portion of side surfaces of the inserted personal electronic device; and the card portion includes a bottom surface and side surfaces joined to the bottom surface and extending upward therefrom, wherein the bottom and a first portion of the side surfaces of the card portion form the second fitted cavity and a second portion of the side surfaces of the card portion substantially cover the side portions of the personal electronic device portion, wherein the second fitted cavity is configured to accept and retain at least one card and at least one of the first portion of the side surfaces includes an opening via which the card is inserted in the case; and characterized in that the card portion further includes: a retaining feature to exert pressure on the one or more cards to retain the one or more cards in the card portion, wherein the retaining feature comprises a deformable flap that extends from the personal electronic device portion into the second fitted cavity of the card portion, wherein the deformable flap exerts pressure by friction on cards and thereby retains any cards that may be inserted into second fitted cavity.