Fun Central S0 6 Inch Premium Glow in the Dark Sticks - Yellow SIZE:These Yellow Premium Glow Sticks measure approximately 6 inches long and 1.5 cm in diameter. HOW TO USE: Make the stick glow by snapping it and then shaking it. Glows once for 8 to 12 hours. Glow Stick contains glow liquid content which results into a brighter and longer lasting glow as soon as the lights are turned off. PERFECT FOR: Can be used for concerts, school spirit events, sporting events, celebrations such as New Year's Eve, Christmas Parties, Rave Parties and other glow-themed parties. These glow sticks are also useful during school trips and nursery outing, giving children a glow accessory in the same color so that they can be easily identified as part of the group. Highly visible and the kids love them too. INCLUDES: Each box contains 25 pcs of Glow Sticks that comes in bright yellow color. Each glow Stick comes with a pre-attached hook and lanyard. MANUFACTURING: This Glow Stick is made from high quality material that is safe, nontoxic and environmentally friendly.