With OCB Activ'Tips Slim Unbleached every puff tastes pleasantly cool and dry and the pollutant load on the respiratory tract is reduced. For the activated carbon used, OCB has placed particular emphasis on quality; specially shaped activated carbon pellets are used, which are manufactured according to strict specifications and adapted to your use. When filling OCB Activ'Tips Slim, special emphasis is placed on the optimal filling density, which guarantees the best possible filtration with a pleasantly light draw resistance at 7mm diameter and 27mm length of the Slim filter.