World novelty! The first good conical filter. Thin for pulling, wide for mixing. Perfect filter for the perfect joint! Features: Content: 42x conical Xtra Slim Size activated carbon filters by PURIZE®. Dimensions: ø 5,4 mm front ø 5,9 mm back x 25mm Filling: coconut based activated carbon in crescent shape. Packaging: reusable glass. Keeps the activated carbon filters in the optimal environment. The PURIZE® activated carbon filters provide a cool, dry and aromatic smoking experience that is easy on your lungs! Since both end caps are ceramic, there is no insertion or insertion direction to consider. PURIZE® filters are suitable for all types of roll-your-own. The high-quality coconut-based activated carbon is sustainably produced in Germany from environmentally conscious raw materials. Thanks to the crescent-shaped surface of the coconut carbon, less carbon is needed. Same filter effect and better draught. Good to know: activated carbon, also called medicinal carbon (lat. Carbo medicinalis), is porous, fine-grained carbon with a large inner surface. The adsorbent is used, among other things, in chemistry, medicine, drinking water treatment, wastewater treatment, and ventilation and air-conditioning technology.