Peak Resistance High Altitude Training Mask

This mask is making my oxygen intake better, and strengthen my lungs. It helps me to regulate my breathing. It's like having a weight vest on your lungs. The levels are also great, I'm still on the lowest, hopefully I can turn it to the highest level

This is by far the best elevation mask... I tried every other mask before finally getting this one. The mask is simple... meaning you don't have to pop out the valves to change the intensity. There is a resistance switch right on the mask. The biggest benefit I found was the way in which the mask actually fit around my mouth an nose. I struggled with the other brands getting it fit and create the necessary air seal around my face. This mask has 2 straps which position themselves around your head perfectly and keep the mask from moving while you are engaging in activity.