Abstract: A holster assembly for a hand-held computer or other hand-held electronic device. The holster assembly has first and second holster sides connected together to define a receiving area with an open end and a substantially closed end opposite the open end. The open end is sized to allow the hand-held computer to be moved into and out of the receiving area between installed and removed positions. The first holster side is a molded, compressed foam structure having a first contoured surface shaped to substantially cover the first side portion when the hand-held computer is in the installed position. The second holster side is a molded, compressed foam structure having a second contoured surface facing the first contoured surface and being shaped to substantially cover the portion of the second side surface. A holster retaining strap is attached to the first holster side to allow the holster assembly to be retained on, as an example, the belt of a user or the like.