Length: 36 mm
Diameter: 9 mm
Method: Silica gel + elastic valve

This filter combines an elastic valve with the silica gel for specifically trapping tar. By breathing in the smoke, the smoker opens the valve, thereby creating a very thin slot that ensures most of the tar is deposited on the filter wall. The silica gel then completes the filtering operation.
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| Round transparent box of 25 packets, of 10 filters |

