Adurance Training Workout Mask, 4 Breathing Oxygen High Altitude Training Mask

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