The comfort and tightness of the sports mask are very good. There is no problem when breathing, walking, jogging, or running at medium speed. Perhaps its breathing valve is very helpful. When wearing this mask, the subject began to have difficulty breathing when it reached 80-90% of exercise intensity (orange), so it can be used initially when estimating the running strength of 80% or less.
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Sports mask classification
Release time:
2018/11/14 19:39
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