In one embodiment, {TAIL ~ the spacer} includes at least one cushioning segment defining a gap for providing {HEAD ~ the separation} 
In one embodiment , { TAIL ~ the spacer } includes at least one cushioning segment defining a gap for providing { HEAD ~ the separation }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD