Targets at filtering 99% of breathing hazards, let you no longer be bothered by dust / pollen / sawdust / chemicals / fumes / particulates and so on. With RooRuns Dust Mask, nothing can hurt you. ❤Healthy breathing - Active carbon filters isolate 99-percent of dust, chemicals, fumes and particulates, it's the best face mask for dust. ❤Specially designed for warmer environments - As it allows maximum ventilation to your skin, while firmly holding the filter and valves in place. ❤Adjustable Velcro - Velcro neck design ingenious, the size fo this dust mask can be adjusted to meet the most head type. ❤Combination of ergonomics perfectly - According to human face design, has a protective surface as the face size. The section of nose has aluminum fixed to prevent sliding. Installation instructions: 1.Cover dust mask on the bridge of the nose and chin. 2.Fix the dust mask firmly with Velcro on the back. 3.Install wrought aluminium nose bridge,can be self-adjustment in accordance with each one a different face and nose,suitable for various face shape , high marginal adaptation. 4.Check whether appropriate by breathing hard with hand cover on the face to see if forced expiratory air can flow. 5.Adjust the Velcro on the back of the dust mask to adjust the tightness and firmness. Tips: 1. The cycling mask can be wash.But you must put the filter down. 2. The dust mask filter can be replaced,Here is the step: - Open the breathing mask to expose the interior of the filter valve. - According to the OPEN directions on the valve,turn the valve counter(clockwise),to separate the valve. - Remove the filter. - Replace the new filter,reverse the above steps,clockwise rotation of the valve,over. 3. Average size,stretchy and adjustable.
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