Before use, make sure to remove any material residues, as otherwise they may cause discomfort and irritation on the tongue. The material is "natural" and provides good absorption.

Very good, it acts as a filter, making smoking enjoyable, preventing burns and avoiding combustion residues from coming into the mouth, not to mention that you can smoke the bowl almost to the end. The only drawback is that it has some thicker pieces that you have to break, otherwise they take up space from the tobacco.