Pre-Roll J-Tubes are available in six length sizes, corresponding to the cone size they are designed to store. Each child resistant plastic tube is available in a wide range of transparent (clear) or opaque colors (many states require licensed retailers to sell products in opaque packaging). These contained are made in the USA with medical grade polypropylene and FDA compliant colors and will not contaminate contents with harsh odors or dangerous toxins. J-tubes are easily labeled and are a great way to maintain the quality of pre-rolled joints after being filled.