|Ultra 6 inch glow sticks are super intense glow sticks that burn ULTRA bright for 5 minutes. These special 6" glow sticks are uniquely formulated to burn as bright as they possibly can for 5 minutes. 6" Ultra glow sticks are used as safety markers, emergency flares or for any use where you need an intensely bright and safe light source! Our Ultra intensity 6 inch glow sticks have been used for military operations and are awesome for glow stick dancing too! All of our glow sticks including the 6 inch Ultra Intensity Glow Sticks are waterproof, don't give off heat, are non-sparking and are 100% guaranteed not to leak or be duds, so whether you're at a dance competition or on military maneuvers, you know our glow sticks will work every time!