... non-radioactive,waterproofNo heat, flame and sparks, No batteries requiredSample is availableConform to EN71 and ASTM F963 standards NOSIZEPACKMEAS.QTY.N.W ... windproof ,4) No heat, flame and sparks, no battery required .5) Conform to EN71 and ASTM F963 standards 6) Storage life: 2 ... colors (green, blue, pink, red, orange, white, purple and yellow available) 9) One color imprint on glow stick 10 ...