should offer little or no static electrical charging characteristics nonetheless the core surfaces do not have to be laminated but can standalone or can utilize coatings such as fabric wax antistatics powder film oil silicone ink or paint the inner core may also be of a solid material or blow foam product that is laminated between two sheets or may even be fabricated of a corrugated cardboard type one preferred shape of the tube body 22 is a straight cylindrical form with a hollow center but it can be oblong rectangular triangular or even cone shaped the tube body wall can average typically from 0 5 mm to 2 0 mm in ply thickness with overall inner dimension roughly from 20 mm to 70 mm and of a length varying from 80 mm to 200 mm still other sizes may be explored for performance at one end of the present embodiment exploded view fig2 is a mouthpiece 14 with three stages featuring an outlet opening at the pinnacle of the lip or first stage 16 that features rounded or beveled edges for patient comfort transitioning to a second stage or mouthpiece valve stage 18 that allows space for free flow valve flap.