Minimizing outer packing of catheter to the size suitable for pockets makes users able to carry them without extra burden. Whose concise packaging design lowers cold feeling most existing medical materials create and allows users to take them out from backpack or pocket at ease with no need to worry judgmental eyes from surroundings. Straight wide band not only features “easy to fix partition,” but also provides convenience of storage; whenever going out or taking a trip, users can adjust strap length more quickly to carry numerous catheters. And used catheters can be put back to packing shell prior to dispose to reduces bad impressions.