Cyalume 12Hr 6" Snaplight Glowstick Green

• Each light stick is individually foil-wrapped for protection from light and moisture• They have up to a five-year shelf life from date of manufacture.• Duration of 12 hours• Waterproof• Visible up to 1 mile (1,6km)• Generates no heat, sparks or flames• Non-toxic, non-flammable• Always ready for use• Red - danger, orange - cautionary, Green - safe