With these aroma capsules you can give your usual cigarette brand a slightly different taste... with a slight pressure on the filter (until it "clicks") Depending on your taste, you can choose one of the (x) flavors. In a bulk pack there are (x) smaller doses with capsules. So ideal to take with you. There is a practical hole and insertion aid on the can. Simply poke a hole in the filter from below and insert it with the other side of the aid.