Check Filter Guide.
Hygiene Products. Non-returnable.
New filter. 2 layers of material. Made for Gym, outdoor activities, warm weather. The density is less than 20%.
Easily replaceable. Lasts for 4 hours. Suitable for 20 washes.
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.