Our FULL FLAVOR activated charcoal filter is only half-filled with activated charcoal. As a result, significantly fewer pollutants are filtered and the taste becomes stronger. With its 6 mm diameter, it is the slimmest member of the actiTube family. Thanks to the mild taste of our 7 mm and 8 mm activated charcoal filters, people often take overly large drags. This causes the joint to overheat. With the 50% FULL FLAVOR filling, the smoke tastes more intense and small puffs are enough to get a strong taste.