Review on Maximize Your Stamina and Performance with POWERBREATHER Sport by Matthew Seamster

I waited a month to check because I wanted to make sure there weren't any problems. This whistle is a game changer. It is superior to a traditional snorkel because it circulates air instead of "breathing through a straw" and breathing back CO2. Maybe, maybe not, but that's subjective for me. The fit and bridle mechanism for wearing are comfortable and greatly improved over the traditional snorkel, even in the sea the fit is great and the cleanability is excellent. I've mainly used it for lap swim training, it's great. We live in Maui and when I swim people from all over the world get interested and after I explain it and try it on they get hooked. As the title says. This is a game changer and a lot of fun. It made my swim training more comfortable.