Just in time for 4/20 I bring a new model of a j-tube/ doob-tube for all of you. This tube gives you 89.5mm worth in internal space to work with, and can fit a double wide paper snugly, or a single wide with plenty of extra space. The top is threaded for ease of use, and can certainly be opened with one hand. Feel free to give me feedback on the design.
Thank you for the support, enjoy!