Abstract: An elongated flexible envelope having one open longitudinal margin is provided and is of a length and width to receive the flexible and inflatable strap-type body of a sphygmomanometer therein. One side of one end portion of the envelope includes first window defining structure and a first readily removable closure therefor, the other side of the other end of the envelope includes second window defining structure and a second readily removable closure therefor and the longitudinal margin of the envelope opposite the open longitudinal margin has an opening formed therein and an integral flexible tube portion has one end portion anchored to the envelope about the opening and a second end portion extending outwardly from the envelope. A sphygmomanometer strap-type body is receivable within the open longitudinal margin of the envelope with the attached bulb-type pump thereof and the associated valve equipped air line loosely receivable through the aforementioned opening and in the flexible tube portion.