Cost-effective disposable chemical light sticks ✅ Yellow / Pink / White [Long-lasting glow | Disaster-prevention certified | Multi-scene compatible] Approximately 14-24 hours of long-lasting glow. Easy to bend and with a long glow time, these are the perfect penlights for events. Ideal for live performances, concerts, cheering, weddings, birthday parties, as well as night vision for camping and hiking, and as disaster preparedness supplies. Reliable as emergency light sticks during disasters (power outages, earthquakes). *Other colors have a soft glow, and are characterized by "moderate brightness that isn't too dazzling" for wedding mood lighting and home disaster preparedness. (Maximum brightness when bent, gradually dimming over time) [Easy operation & safe design | Just snap and it glows immediately] ① Bend strongly until you hear a snap → ② Shake lightly to mix the liquid and it will glow instantly. Thick tube design prevents liquid leakage, so you don't have to worry about getting your hands or clothes dirty. Chemical lights produced in an ISO9001 certified factory. Clear tube type that beautifully displays the glow. [Lightweight design | With hook for attachment anywhere] Lightweight design for convenient portability, you won't feel the weight even in your bag. Penlights with hooks that can be hung on tents and bags. Disposable type with consideration for hygiene, providing peace of mind in emergencies. Perfect as glow sticks to brighten up any occasion, such as weddings and Halloween! [Product Details] Set of 15 / Size: Approximately 15cm long x approximately 1.8cm in diameter (about the size of a regular ballpoint pen). Light sticks that are easy to grip even in multiple quantities. Colors change before and after glowing! Due to the chemical reaction, the liquid color before bending and the glow color at the time of emission are different (you can check the actual color difference in the comparison chart in the product image)