Filter D12 Replacement filters 5 pack - White | Barcode Berlin
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.
New D12 breathe easy designed filters. 6 layers of protection. Filters are made for gym, workouts, training, outdoor activities & warm weather when the air density is less than 20%
Each filter lasts 4 hours. Filters are washable 20 times.