Made for gym, workouts, training, outdoor activities, warm weather when the air density is less than 20%.
Option 1: Put in boiling water for three minutes.
Option 2: Put filters in a pot. Boil water in a kettle
and pour it into the pot over the filters. Wait 3 minutes.
Filters: 100% Polypropylene.
100% Polyester Washable Mask.