Static shock is caused by an electrical charge built up in a person, changing them from being neutral to being negatively or positively charged.
Once charged, if a person then touches something that is conducive to electricity, it causes a static shock.
The cause is usually dry air and the materials that rub against each other.
It's not uncommon for people to experience static shock when jumping your a Vuly trampoline.
The material of the trampoline surface is usually the culprit. If the surface is made of nylon, it's a good conductor for electricity and can cause static shock.
Here are some tips to help you avoid static shock on the trampoline:
Note: Synthetic soles are usually the worst sole to wear to reduce static shock, as they are a great conductor of electricity.