The BATCLIP elegantly holds a stethoscope in a tight package securely against a waistband or on a belt. First sewn in a Louisiana leather shop in 1995, this holster has gone through over a dozen design improvements and is still used daily by the inventor (an emergency physician) himself. The best way to use the BATCLIP is to put it on your left hip with the metal clip attached to a belt (to prevent the metal from pressing on bare skin) directly along the midaxillary line. This results in the BATCLIP being out of the way when you are sitting, walking, running, or boarding an ambulance or helicopter. Too far forward and it gets in the way of things like a pants pocket, grasping hand, or doorknob. Too far back and it impedes comfortable seating. Thus, midaxillary line is usually best. (The exception is occasionally found in women with wide hips, where a longer pelvic brim make midaxillary placement awkward.) Placement on the left hip ensures that the opening flap is facing backward, so it cannot get caught on anything that may inadvertently pull it open. To rapidly unholster a stethoscope placed in the BATCLIP, use your right hand to reach across your midriff, grasp, and pull open the leather wing. At the same time, hold the stethoscope with your left hand just above the BATCLIP. When the wing opens, pull the stethoscope up and out of the holster with your left hand, and then reclose the wing with your right. The wings of the BATCLIP are eccentric allowing the holster to accommodate narrower and wider stethoscope heads. It works best with traditional stethoscopes that have a bell and diaphragm, since the indentation between the bell and diaphragm allow the earpieces to be wrapped around the bell prior to inserting the stethoscope into the holster. However, it does work with single diaphragm and electronic scopes as stated in the reviews.