The Hartmann "quick clip" has been included to allow carry-on items to be attached to the outside of your Mobile Traveler.
Snap the t-shaped end of the strap into place. This is located on top of the bag (in front of the carrying handle). Some pieces have the snap-in on the Mobile Traveler handle requiring the strap to be fed through the top carrying handle before snapping into place.
Make sure the inside of the quick clip cradle is showing and hanging properly in front
Adjust strap to desired length - Tip: hang your carry-on lower for better weight distribution
Place the carry on handle into the "cradle" of the quick clip and snap into place.