Jrb Mw3 "short" On A Bmbh Ul JRB MW3 "short" on an occupied BMBH UL. Probably as good, or better, of a fit as you will find. This view a side view of foot end. Notice perfect seal, and the channel end cords are not even cinched up, and there are no draft tubes! Notice good loft under the buttocks even with quilt snugged tight.