11 lbs (5kg) UV Yellow. The UV or Neon powder is ideal for any blacklight party or event! Fire resistant and biodegradable. Bulk packaging is used when you quickly and easily want to spread large amounts of powder in the air. Used for Color Runs and events where people use the powder on a large scale. Self-evidently, bulk packaging is more affordable per kilo than separate bags. If you have any other questions, don’t hesitate to give us a call!