6 Levels Sport Breathable Face Mask For Fitness Running Breathing High Altitude Oxygen Trainer

Description 6 Levels Sport Breathable Face Mask For Fitness Running Breathing High Altitude Oxygen TrainerItem Specifics Type Sport Face MaskColor BlackGender Unisex Size One Size Flexible Material Silicone Composite Fabric ABS Features The athletic breathing mask has a comfortable edible silicone mask that fits snugly against the face Workout mask has breathable and 6 position adjustment lever to adjust the resistance silicone breathing material more clean and safe more obvious effect of oxygen barrier Oxygen inhibiting workout masks can effectively improve your oxygen intake 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 workout can get rid of fat better shape The workout mask is suitable for cycling climbing etc Trainer mask are good for the maintenance of muscle strength in cardiopulmonary function The oxygen barrier training face mask has 3 accompanying resistances and 6 levels adjustments The product is newly upgraded and is an efficient training aid for trainers and athletes Through airflow design simulate the altitude environment of the plateau thin air and low oxygen content can effectively exercise vital capacity heart load intensity physical fitness endurance and explosive power During the training the oxygen mask will become more rapid and difficult to breathe The increase of breathing resistance will greatly im