The WIDESIDELanyard features theWIDESIDEfor extra comfort around the neck (about 3/4" wide) and theQR SYSTEM for changing or adding calls to the lanyard. It comes set up for two calls at the lower part of the lanyard. It also comes with a DOUBLE QR DROP for a third call in the upper part of the lanyard and aWHISTLE DROP. QR System - With the Quick Release System you can swap out the calls on your lanyard or add more calls to your lanyard. Put them right where you want them. QR Drops are available in single or double configurations. The double QR Drops have cord locks to increase the security of your valuable calls, put a loop on each side and lock it down.