LED Reusable Twist Glow Sticks are great for festive occasions and emergency use. Twist-on/twist-off function allows you to use them multiple times. They last up to 60 hours and are eco-friendly, nontoxic and contain no harmful chemicals. Water-resistant, impact-resistant glow sticks float in water. Carabiner clip easily attaches to most loops. Child-safety screw prevents children from swallowing the small, button cell batteries that power the glow sticks. Adults can easily replace the cell batteries for continued use. 7-3/4" glow sticks help reduce landfill waste and are perfect for disasters, blackouts, emergencies, camping, fishing, hunting, hiking, parties and more.