Choose Options Quick view 5 Pack - Activated Carbon Replacements Filters for Sport Face Masks 5 PACK SPORT MASK REPLACEMENT FILTERS Imported 5 Pack of Activated Carbon Filtration Filters Fits Most Sport Face Masks Effective Filtration for Cycling, Hiking, Running and Other Outdoor Activities This Filter is NOT Reusable Discard After... MSRP: $6.95 Choose Options Add to Wish List