The ultra bright glow sticks are made from high-grade materials, which assures a lasting use of up to 12 hours and it holds the glow in the dark(GITD)normally.You just need to simply snap the chem lights in the middle and shake until fully activated. This is an ideal choice for Survival Gear.The 6 inches glow sticks are waterproof and non-toxic.There are 6 colors:orange,blue,green,pink,yellow,purple,white.( 6 colors will be sent randomly).The chem lights keeper includes 6pcs chem lights(random color),one Carabiner Clip,2 keychain cables and six pull tabs,featuring two different variations (smooth and serrated).This chem lights pouch is ideal for outdoor activities such as sports, camping, hunting, and fishing. It can be mounted onto backpacks, vests, belts, and other gear setups, providing you with convenient access to keep your chem lights.