WPBO Rules book 1.1 includes the WPBO 500* limited paint format explanations:
- Players are limited to two paint pods and one loader when entering the field.
- Maximum size of Loader will have a volume capacity of 1500ml.
- Paint pods will have a maximum volume Capacity of 700ml.
- Only 0.68 calibre paintballs maybe taken onto the field.
- Paintballs can only be used from Authorized Loaders and Pods, any player using paintballs from any other source (example the floor) will be eliminated.
* For 2016 only: a maximum Pod capacity of 800ml will be allowed to enable existing pods to be used this season. In 2017 this will be removed.