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