View single post by Mahi mahi
 Posted: Fri Jan 18th, 2013 05:04 pm
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Mahi mahi



Joined: Thu Apr 12th, 2012
Location: Simonstown, South Africa
Posts: 905
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Mana: 
did a little research and a few different products out there, here is some interesting reading

http://blog.betterinnovations.com/2010/07/26/comparing-powerlung-with-ultrabreathe-expand-a-lung-sportsbreather-powerbreathe-and-others/#axzz2ILnZvlEq