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The Exapand-a-Lung is a respiratory training device that retails for $40. This is a similar tool made for less than $10. And can be easily adapted to ...
If you are a freediver or spearfishing enthusiast then you will know the importance of shaping your mouthpiece to your already existing mouth shape. W...
The valve is a device that appropriates a restrictive element to a chaotic force (try not to picture a parent leashing their child to their wrist in t...
No words can adequately describe the intensity of the picture below. Nah, really you just mate the ends of your silicone mouthpiece to the hard plasti...
You can now secure the mouthpiece with your adhesive or zip tie, and begin to put the Expand-a-Lung company out of business. How they ever got to char...
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