Training Exercise Mask Oxygen Control Mask - High Altitude Simulation - for Gym, Aerobics, Fitness, Running, Endurance and HIIT Training [16 Breathing Levels], One Size Fits All, Running Fitness Cardiopulmonary Fitness

Description Show Less Features: 1.Self-abuse training exercises your heart and lungs, fitness, endurance and explosiveness to stimulate your body's wireless potential. Exercise mask to increase the difficulty of training can get rid of fat, better shape. The training mask is suitable for cycling, climbing,running etc. 2.The athletic breathing mask has a comfortable, edible silicone mask that fits snugly against the face. Workout mask has breathable and comfortable high-quality cotton elastic pores elastic fabrics, 6-position adjustment lever to adjust the resistance, silicone breathing material more clean and safe, more obvious effect of oxygen barrier. 3.The new front rotation adjustment resistance is easier. There is no need to remove the mask and replace the breathing valve. It can create different air resistance from easy to difficult to achieve different training intensity. 4.Fine workmanship, clean and odorless, cotton fiber stomata elastic fabric, breathable and comfortable.