It could stay lit for a very long time and easy to see in the dark . Work great and last long time.The glow sticks are perfect for night fishing or early morning fishing . Perfect glow sticks for fishing lovers . Help to catch more fishes .How To Active The Glow Sticks: Bend the middle of the to crumb the pellet in the tube , snap and shake to mix the pellet, the glow sticks will light and glow, then insert into the fishing bobbers or fishing rod alarm.Lightweight and small size and Portable to carryColor: GreenMaterial: plasticsize: 4.5 x 37mmPackage Contents:50 x Fishing FloatOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.