The inner layer acts {HEAD ~ a barrier} between the skin of the foot and {TAIL ~ the absorbed moisture} 
between
The inner layer acts { HEAD ~ a barrier } between the skin of the foot and { TAIL ~ the absorbed moisture }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL