High Altitude Hypoxia Training Activated Carbon Mask Oxygen

Activated Carbon Dust-proof Sports Mask With Anti-Pollution Respirator PM2.5 Filter Brand: XINTOWN Name: Activated Carbon Dust-proof Sports Mask Material: Nylon + Spandex Color: Red/Blue/Grey Gender: Unisex Size: One Size Built-in Filter Type: KN95 Filtration Efficiency: Above 99% Applicable: Cycling, Running, daily leisure and other outdoor sports Features: 5 layers of protection. Protect you during outdoor sports. KN95 respiratory protection in fog and haze. Perfect fit human adult head and neck structure. Activated Carbon Layer to Help Filter Odor in Air. Dust-proof,flexible and comfortable,adjustable nose clip. Double expiratory valves, no humidity and heat, no fog in glasses. Suitable for riding, running, daily leisure and other outdoor sports. Cold flow exhaust valve, smooth breathing resistance, comfortable to wear. Replaceable filters are recommended once a month. Package Included: 1 x Activated Carbon Dust-proof Sports Mask