The Ti2 Design Sentinel S4L Titanium Cache offers a "first in market" design with dual removable end caps. Each end cap is threaded and includes an O-ring for a watertight closure. A lanyard/keyring loop on top makes the Sentinel portable and convenient. This S4L model is 4.75" long and comes in a stonewashed finish. Keep you smaller items safe and securely stored with the Ti2 Designs Sentinel S4S.