Thingiverse
Otovent
door ryosama
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An Otovent to practice mouth fill compensation for freedivers.
Add an inflate ballon on the flat side to train your soft palate and your epiglottis.
http://apnee.weebly.com/entrainement-frenzel-a-sec.html
http://www.otovent.net/otoventGlueEar.html
Add an inflate ballon on the flat side to train your soft palate and your epiglottis.
http://apnee.weebly.com/entrainement-frenzel-a-sec.html
http://www.otovent.net/otoventGlueEar.html
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