I wanted to hate this. It’s so silly and I look so silly using it. But my runs are improved after just a FEW days of using this. This is so easy to use and so effective. It fits in my mouth well and is comfortable to use. Really recommend and cheaper than a lot of competitors. Read more
Good product for the price. Read more
First week hard now lungs stronger Read more
Why did you pick this product vs others?: It’s exactly as it looks and useful for what it’s supposed to do, it’s a one size fits all , not at all like a mouth guard that can be fitted. Read more
Works great; I ended up buying a few more for my clients. Read more
Kinda hard to breathe with it on I believe that's the point. I will recommend this product Read more
It's a simple apparatus, but it was designed successfully for its purpose. I feel the effects. Read more
The product is really good. I just stopped using it. Read more