The Elevation Training Mask 2.0 minimizes training time and maximizes performance in a variety of exercises and sports. Breathe and control the flow of air delivered into your body by creating resistance through the mask’s flux valves. This multi-level respiratory device trains your lungs to take deeper breaths and use oxygen more efficiently in altitude resistances up to 18,000 feet. Take training to the next level with the Training Mask 2.0. FEATURES: High altitude training mask for ultimate respiratory training Maximize performance in running, mixed martial arts, yoga, soccer, basketball, swimming, football and hockey Conditions your lungs by pulmonary resistance and strengthens the diaphragm Increase surface area and elasticity in alveoli, lung capacity and anaerobic thresholds Levels of Intensity: 3 nose pieces for 3 levels of intensity: 1x, 3x, 6x and 9x restricted breathing Trains your body to breathe in 3000 feet, 6000 ft, 9000 ft, 12,000 ft, 15,000 ft, 18,000 ft in “altitude resistances” Includes: 6 air resistance caps, 3 base pieces with flux valve plungers, 1 silicone training mask, 1 neoprene sleeve, fitness workout booklet/instructional booklet Made of silicone training mask, high grade neoprene sleeve, rubber base pieces and resistance caps and high quality printing to withstand outdoor training. Hand wash only.