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