Sky Vandal from Vivid Pyrotechnics
The biggest and longest duration firework from the entire Vivid range, the name sums this firework up perfectly it literally vandalises the sky with the most amazing array of colours and effects, producing 44 different effects in total and lasting for around 2.5 minutes this literally is a show in a box.
 
Watch this product in action above or use this link to view on YouTube