When the retractable/deployable bolster is retracted the closure mechanism is positioned over {TAIL ~ the retractable/deployable bolster} to prevent the retractable/deployable bolster from protruding from {HEAD ~ the top surface} 
When the retractable / deployable bolster is retracted the closure mechanism is positioned over { TAIL ~ the retractable / deployable bolster } to prevent the retractable / deployable bolster from protruding from { HEAD ~ the top surface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD