Training High Altitude Hypoxia Mask Oxygen Controlled Mask

Specifications: Color: Blue,Red,Grey Type: Face Mask Gender: Unisex Size: One Size Fits Most Material: Nylon+Spandex Occasions: Outdoor, Bike, Motorcycle, Ski, Cycling, etc. Features: -Protect you during outdoor sports. -Perfect fit human adult head and neck structure. -Fashion and Cool, Cycling Tool, Hypoxia Training, Durable. -Suitable for skiing, cycling, travelling and other outdoor activities. -The back of neck with magic paste, can adjust size to meet your needs. -Comes with filter, dustproof. An ideal mask for cycling, hypoxia training, etc. Package Included: 1 x Training Hypoxia Mask 1 x Spare Filter