Our 6 inch premium glow sticks are very bright and glow for a longer amount of time than our standard sticks do. Perfect for a glow in the dark party! Each box contains a variety of fun colors. The sticks measure 6 inches long by 1.5 cm in diameter and glow once for 8-12 hours. Each glow stick comes with a pre-attached hook, which can be used to hang the stick. To activate the item, simply snap and shake it. Sold by the box (25 glow sticks per box).