The Regular Size filters are supplied in a resealable and practical 50-pack storage bag. The packaging is particularly suitable for travel, as the filters can be stored in an airtight and watertight container and are thus protected from external influences. The high-quality activated carbon significantly reduces the absorption of harmful substances and provides a cool, dry and aromatic smoking experience. Suitable is the activated carbon filter for standard 9 mm pipes & of course for all types of self-rolled! Since both end caps are made of ceramic, there is no insertion or screwing direction to consider. PURIZE® Filters are made from environmentally conscious raw materials, sustainable and "Made in Germany". The smoking experience is particularly intensified by the use of doobiewoods or glass tips, which lead to additional cooling of the smoke and an even more pleasant mildness.