Review on Enhance Performance with VIKINGSTRENGTH 3. Generation VO2 Workout Mask for Running Biking MMA Endurance by Adam Huper

I'm surprised I didn't find an unboxing or video on how to change the filter, just an exploded view of the parts in the box. If someone could do an unboxing video that would be great. Not mentioned in the instructions, here's my own quick guide: Take the pear-shaped plastic front cap at the bottom and pull straight out (pivot is up/nose). Region). Once the lid is removed you will see two circles with small handles on them that look like a capital Q and a capital Q in the mirror image. You can rotate them to set your desired breathing resistance. Besides, you love it!