Simply attach this pocket keychain pill holder to any bag or backpack. It’s the easiest way to ensure that your medication is always close at hand. The ergonomically shaped screw-in lid makes attaching and releasing a seamless process. This travel-size container for pills is completely waterproof and tough enough to handle the elements so you can keep your medication in good condition no matter where you take it. The rubber O-ring prevents any contaminants from creeping in and the metal is toxin-free.