Filter and Breathing Valves for Cycling Mask Replacement Activated Carbon PM2.5 Anti-Pollution Protection Face Mask

$17.48
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    Description

    This cycling mask is a great cycling accessory for anyone who enjoys cycling or just going for a run. The product is also made of a comfortable and durable material.   Usage for the filters Recommended to be replaced every 1-2 days in the special time ，if go to a place that was heavily polluted or crowded, please replace filter soon. ( In the absence of pollution , the filter can be used for 30 days, but if it is found that the filter becomes darker, it must be replaced in time. ） Breathing Valves