Approximately 2″ long x 5/8″ around. Includes log. There’s a reason these containers have been in use by geocachers for as long as they have. You can hide them practically anywhere and they’re tough as can be. The o-ring helps keep them watertight. Whether you’re hiding it by itself or using it as a part of your home made geocache, you can’t go wrong with a handful of these in your cache pack. Buy one or save money when you buy in 6-packs–or save even more with a 12-pack.