The method comprises determining an amount of {HEAD ~ volume} of a cavity of {TAIL ~ the body suit} 
The method comprises determining an amount of { HEAD ~ volume } of a cavity of { TAIL ~ the body suit }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL