|With it's foam casing, these 15" foam glow sticks will float in water, are easy to grip and are soft and safe for all ages! Bang them together for a clapping effect during concerts, throw them in your pool for a really cool glow effect or have a mock light saber battle with these soft foam encased glow sticks! Foam Glow Sticks have a 12 hour glow duration and are available in a selection of colors. Foam covered glow sticks also make great safety sticks for boating and water activities as they are large, highly visible, totally water-proof and float in the water. They can also be used as highly noticeable path markers or traffic direction batons.