These 2 ounce disposable shot glasses by DirectGlow are highly neon in normal light and glow super bright in UV blacklight. They are constructed of hard yet flexible plastic so they won't break easily. Each order includes 5 FREE blacklight balloons for a fun added touch to your glow party. Balloons are latex with an 11 inch diameter. Helium compatible. These fine barware shot glasses can be reused over and over again with careful hand washing after each use. Our fluorescent neon shots are perfect for glow parties, birthdays, holidays, family reunions, festivals, concerts, themed events, catering or everyday general use. Match with any of our other fine quality neon cups, plates, serve-ware to make your glow party complete! Please note, these shots are blacklight responsive ONLY. They do not glow without the use of an ultraviolet blacklight.