Never rubbed off -- Upgraded 3D Printed Label for daily marking,won’t rubbed off easily for over 5000 times of use. Reliably Lock -- secure lock design,easy open,will never pop-up by accident. BPA Free -- Made of food grade plastic,non-toxic, non-allergenic,,safe for medical use. Ttraveling with one week -- You can fill your pills once a month and good for take one or more for traveling or going out. Large Capacity -- You can simply organize your weekly pill organizer 4 times a day at the beginning of the week each compartments can hold up to 8 fish oils or 9 large vitamins for daily uses.