With a simple bend, snap and shake SnapLight 6" Chemical Lightsticks are industrial grade, phthalate-free provide instant light for all emergency situations. Each snaplight creates 360 degrees of illumination for up to 12 hours and are visible for up to 1 mile. They are non-toxic, non-flammable, waterproof and emit no heat or sparks. Perfect for triage markers, emergency evacuation, roadside emergencies, any situation where you need reliable, long lasting illumination. Yellow. Phthalate-free Non-toxic Non-flammable Weatherproof Weight: 9 oz