Our plastic Pre-Roll J-Tubes are made with medical grade polypropylene. The 109mm size are designed to store King size or King De Luxe pre-rolls. For a child-resistant container, consider using the Squeezetops® J-Tubes, available in either opaque or transparent colors. For storing craft pre-rolls in packaging with a premium look and feel, consider our Glass J-Tubes. People with scotophobia should check out our glow-in-the-dark specialty J-Tubes.