4" Glowsticks A pack of good quality, individually wrapped 4" glo sticks with a 10mm diameter available in a mixture of 5 colours, Green, Blue, Yellow, Pink & Orange. These retail packaged 4" Glow in the dark sticks come in individual cardboard tubes for resale with safety information & instructions on each one. For bulk quantities, please see our larger quantities link at the bottom of the page. These lightsticks Glow for 8+ hours Not suitable for children under 3yrs old 2 year shelf life guaranteed.