48 Ultra Bright Large Glow Sticks with 48 Black PE String, Multi Use Colourful 6 Inch Glowsticks for Parties, Camping, Emergency Glow Sticks For Blackout, Long-lasting Lighting Waterproof andUltra Bright: It has more luminous materials and brightness than a typical glow stick. So people can see you from a mile away. It's a bright 360 degree light source. Suitable for marking in emergency situations Long Lasting Light: With strict quality control and precise raw material ratio, these large glow sticks can ensure more than 10 hours of glow Emergency Necessities: Easy to store, long shelf life of three years, not easy to damage cracking,