Small sized zip-lock style bags for medicine and vitamins.
​ ​Of course not necessarily the way it was originally intended, they can even be used for keeping coins or something else when traveling abroad. The useful bag can be written on and has a sense of overseas business supplies, something absent in Japanese products. The size is good and you wont even know its there.
​ ​Bought from, regularAir Bornesupplements can be purchased with it at the same time.