In embodiments of the present invention including a pressure activation assembly, the outer housing is formed by a pair of covers having a degree of {TAIL ~ flexibility} and {HEAD ~ elasticity} 
In embodiments of the present invention including a pressure activation assembly , the outer housing is formed by a pair of covers having a degree of { TAIL ~ flexibility } and { HEAD ~ elasticity }
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 TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD