The gap region is sized such that {TAIL ~ a user} can grasp the exposed portion of floss without contacting any part of {HEAD ~ the floss dispenser} 
The gap region is sized such that { TAIL ~ a user } can grasp the exposed portion of floss without contacting any part of { HEAD ~ the floss dispenser }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD