Cyalume ChemLight Military Grade Chemical Light Sticks, Orange, Ultra High Intensity, 15" Long, 5 Minute Duration (Pack of 20) ChemLight military grade ultra-high intensity orange light stick for providing illumination for up to 5 minutes Measures 15" long and provides 360 degrees of illumination Meets military specifications Chemiluminescent substance is non-toxic and plastic body is phthalate free for safety Two-year shelf life from date of manufacture for a maintenance-free alternative to other lighting