Many cigars come packed in individual wood, metal or glass tubes. Metal, particularly aluminum, is the most common type of tube (or tubo), and the tube can be painted or unpainted. A tube can keep cigars fresh (although it’s hard to trust the seals on tubes, so Cigar Aficionado advises putting even tubed cigars in a humidor) and provides an attractive and protective covering for your cigar. Tubed cigars are particularly good for cigar smokers on the go. Most tubes come with a cedar sleeve so as to better preserve the flavor of the tobacco, thereby avoiding any metallic flavors that the aluminum may impart. Tubes come in two varieties: pull-top or screw cap.