This maintenance-free 6 inch high-intensity yellow Lightstick glows for 30 minutes and is not impacted by wind or water. This safe and non-toxic lightstick produces no heat, spark, or flame. It also has a hole at one end in case you want to use it with a lanyard or hang it. When activated, this lightstick produces a bright yellow light that can illuminate a large room and can be seen from long distances. To activate, simply remove the stick from foil, bend, snap, and shake.