Material: Plastic, Fluorescent Fluid These Glow Sticks Bulk Measure About 6 Inches, Suitable For Most People To Hold. You Only Need To Break The Glow Stick A Few Times Or Tap The Edge Of The Table A Few Times To Make The Liquid Inside Mix, It Will Glow Instantly;You'Ll Have Hours Of Fun At Any Party, They Are Brightly Colored To Add Some Sparkle To Your Party. These Glow In Dark Party Supplies Are More Appropriate For Night Events, Birthday Parties, Camping, Music Festivals, Concerts, Proms, Fireworks Shows, Weddings, Halloween, Christmas Parties And Much More. Business Links Can Be Made If Necessary