Training your body to perform better and faster is just one part of the game. Increase your lungs' endurance with the help of a fitness training mask. Designed to mimic high-altitude training, the mask allows you to gradually strengthen your diaphragm, boost anaerobic thresholds and enhance lung capacity, so your body can perform at peak. Used by athletes, trainers, body builders and more, fitness training masks are made with an airtight shell, a soft overlay and adjustable resistance caps. The caps are easy to swap out when it's time to crank the resistance up a notch, and the soft sleeve provides comfort. Many feature cool graphics, so your face can look as fierce as you feel while you work out.