This pill case has a day mark on it, from day 1 to day 31, you can keep the pills on each pill case accroding to your pill schedule, so you can remember which pills you need to take today. The case is sealed, so no worries about your pills will get damp. The mini pill case is portable, you can bring it with your backpack or pocket. Your logo can be printed on it. More details please feel free to contact us.