The Ti2 Sentinel is titanium-built cache for storing items discreetly and safely.

The Sentinel is available in 3 diameters and 8 variations, and can be attached to a key ring or carabiner via the built-in slot at the end. Both water-tight ends are removable, so pushing through lodged items is a snap. You can get in the door for just $30 over on Kickstarter.