Sport Masks for Fitness Running Training High Altitude Face Mask for Resistance, Cardio, Endurance Mask for Fitness Sport Mask

We use food grade silicone gel. It is safe for the human body. It can be worn at ease. Environmental protection and it is our latest model based on 3 generations of training mask. TIPS: The new product is sealed, please use it after ventilation. Breathing is always key. Altitude sports masks can help increase your lung capacity and make your exercise more effective by simulating high-altitude exercise. The training mask can cut your exercise time in half. It is important to choose a suitable sports mask. Take your fitness, sport and game to the next level by adding the cardio mask to your workout routine. Change your breathing intensity during exercise. This gymnastics mask comes with a 6-level valve style, from lightweight to extreme, depending on your endurance. Fabric and harmless food grade silicone gel are very suitable for all sports - cardio, including gym, cycling, running, high altitude training and altitude training, etc. The exercise mask is made from ultra-durable high quality material. Made with strong elastic straps. The sports mask made of material and harmless food grade silicone gel, which is excellent craft and tighter to the skin. There will be no abnormal noise, no loosening.