Description
- HIGH ALTITUDE MASK – Adurance training mask challenges yourself to perform better workout and an improvement of your overall stamina
- LUNG CAPACITY – It helps to expand and improve your lung capacity without having to do a ton o cardio and risk burning calories
- COMFORTABLE TO WEAR – We designed this oxygen mask with sturdy breathable elastic straps, comfortable to wear during exercises
- WORKS GREAT – 4 Level adjustable breathing mask makes simplest tasks tougher and workouts more intense as your needs