Review on 7 Day Pill Organizer With Moisture And Light Protection For Vitamins And Medications - Portable Travel Pill Box With Reminder Functionality by David Boulanger

These 3 little colored pill containers are made of lightweight aluminum and seal well with an o-ring gasket that compresses on the last 1/2 turn. They seal well enough to keep out water.The relatively thin aluminum construction is sufficient to its purpose and keeps the containers nice and light.The silver, blue, and red colors are attractive and allow you to distinguish the contents of the bottles.They key rings are a nice touch to allow easy attachment to backpack or whatever you have available.On the downside, you have to use the attached key ring to tighten and loosen the caps since there is not enough cap to grab onto and there is no texture in the bottle or cap to provide grip. However, the key ring does work well as something to use to tighten/loosen.The other minor annoyance is that they can be a bit "squeaky" when removing or tightening the cap.Overall, they meet their primary purpose of keeping their contents dry in a wet or humid environment.