{HEAD ~ An embodiment} of the present invention resides in {TAIL ~ a polygonal rib structure} wherein the polygonal rib structure is a shock absorbing member 
resides in
{ HEAD ~ An embodiment } of the present invention resides in { TAIL ~ a polygonal rib structure } wherein the polygonal rib structure is a shock absorbing member
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH