Reliable and Long-lasting Output: Superior to the usual party sticks, these emergency glow sticks will provide reliable light throughout the night, with up to 8 hours of glow duration. Versatile: The glowsticks are water-proof and easy to carry, making them the ideal choice for signaling, marking, or lighting up your surroundings in case of an emergency. Easy to Use: Simply snap and shake the glow sticks to activate them, no batteries or electricity required. Premium Quality: These industrial grade Glow Sticks offer military level quality that ensures a perfect blend of premium materials to provide you with long shelf-life, non-toxic, waterproof and CPSIA Compliant safety glow sticks.