The best brand of glow bracelets in the market. You will receive 1 box of 100 Lumistick luminescent light 2" glow sticks. Your order will contain 20 foil wrapped envelopes. Each envelope contains 5 2" sticks. You will get 4 envelopes each of the colors Blue, Green, Yellow, Orange and Pink. These sticks are as fresh as you can get. Once they start glowing, Lumistick brand glow light bracelets will last you all night. They will glow super bright for 6 - 10 hours. After that, they will start to fade out but may continue to emit some light for up to 36 hours. These Lumistick brand glow bracelets come fresh from the factory and were manufactured just a few weeks ago. We are constantly getting new shipments from the factory, so you know these are as fresh and new as they come. They have a shelf life of 2 years. Glow sticks contain two non-toxic chemicals that emit light or glow when they are mixed together. Inside the glow sticks is a thin glass tube containing one chemical and surrounded by the other chemical, when you bend it for the first time, you break the inner glass tube. This mixes the two chemicals together inside the plastic bracelets tube. Just shake it up and presto -- it starts glowing like magic! Lumistick brand glow sticks are non-toxic, non-flammable and non-radioactive. The almost never break open, but if they do, the chemicals inside can be washed off skin and clothes with ordinary soap or detergent.