The Black Betty geocache container is approx. 9/16″ tall and 1-1/2″ around at base, and cache practically disappears when tucked in or under something dark. Watertight, magnetic (super strong hold), complete with logs in a little zip bag. Comes in black only (not painted), medical-grade plastic with snap top, it’s ready to hide!
To test these, we submerged them in water for 24 hours and they remained dry. Of course, they are not meant to be used underwater, but as long as the lid is snapped down securely they should keep your logs safe & dry.