{HEAD ~ The rear side insulation} is preferably {TAIL ~ an inflatable bladder} composed of flexible tubular or modular segments 
is preferably
{ HEAD ~ The rear side insulation } is preferably { TAIL ~ an inflatable bladder } composed of flexible tubular or modular segments
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH