These cigar tubes are rigid and strong, made of abs plastic. Generous dimensions allow the tube to hold cigars up to 7.5 and up to 54 ring size. When you compress the telescoping tube and air is forced out, keeping moisture in. The tube will provide the BEST protection for your cigar till you are prepared to smoke it. As you depress the cigar tube air is forced out insuring your cigar a perfect condition, it comes out as perfect as you put it in. No more damaging your cigars you take on-the-go.