Orion Safety Light Sticks are a dependable light source, whenever and wherever you need it. They are easy to use, waterproof and lightweight. This product offers 360 degrees of light when activated. The light sticks are completely non toxic and non flammable, child friendly with no batteries required. Each 2 pack contains 1 green 6 inch light stick and 1 white 6 inch light stick. Each 2 pack will illuminate for up to 20 hours (green for 12 hours and white for 8 hours).