Each 5 Inch Glow Stick has a small plastic handle with a hole for attaching. Dimensions: 5” long, approx. 3-4” of glow. Diameter – 9mm (0.36-inches). Glow Color: Blue Glow Sticks are packaged unwrapped in baggies. 6-8 hours of Glow time! Glow Sticks have a shelf life of 18 months. Batteries not needed, just crack, shake, and glow!