{HEAD ~ The first or lower layer} of the sole is {TAIL ~ a pad} formed of an elastomeric material which contains a liquid within a set of chambers, one in the heel area and one in the toe area of the sole 
is
{ HEAD ~ The first or lower layer } of the sole is { TAIL ~ a pad } formed of an elastomeric material which contains a liquid within a set of chambers , one in the heel area and one in the toe area of the sole
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH