a cooling device for cooling {TAIL ~ at least a portion} of {HEAD ~ the scrotal skin} of the target area 
a cooling device for cooling { TAIL ~ at least a portion } of { HEAD ~ the scrotal skin } of the target area
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH