Elevation Training Mask with Bag for High Altitude Oxygen Training - Extreme Athletes - Condition Lungs

Elevation Training Mask mimics the affect of High Altitude Training. When top athletes want to improve in their performance, they go to high altitude levels to train, and when they come back to sea level to race, they are performing much stronger, faster, and have more endurance due to the type of training they have been doing prior to the event.