RockBros KN95 Inner Mask Filter Refill with Valves

KN95 HEPA activated carbon filter for the black (LF020BK) or purple (LF03901) RockBros masks with valves.

Features:

• Filters PM 2.5 pollution as well as vapors, pollen, dust, smoke, and motor vehicles spewing smog in your face as you bike.
• Recommended to replace the filter every 30 days (sooner if heavily used or dirt is overwhelmingly visible).
• Recommended usage time: 25-40 hours.

Specifications:

• Material: Activated Carbon
• Model #: KZ1001
• One mask filter per order

*We've been using these masks for pollution protection on our rides since before the pandemic