These pop top, child resistant joint tubes are manufactured precisely to fit any standard size pre-roll. Our eco friendly joint tubes are created with a new technology that uses a blend of plant-based carbohydrates, naturally sourced glycerin, and synthetic polymers, making them 100 % biodegradable. The sealed vial of these doob tubes increases the shelf life of the product inside immensely. They are made of medical grade, BPA free, FDA approved materials and meet CPSC requirements for child safety. These doob tubes are great for promoting head shops, marijuana dispensaries, cannabis clubs, the weed industry and more!