have any of yopu tried the Powerlung...
http://blueh20.com/shopsite_sc/store/html/product267.html
hope the link helps.....is it worth it or is just a con???http://blueh20.com/shopsite_sc/store/html/product267.html :head
http://blueh20.com/shopsite_sc/store/html/product267.html
hope the link helps.....is it worth it or is just a con???http://blueh20.com/shopsite_sc/store/html/product267.html :head