Make a hole in the helmet front air vent. Push the white tube through from the inside

Slide the Velcro looped tabs onto the white tube. Push the end onto the dry-break connector

Remove the helmet inner cheek pad. Stick the Velcro® patch to a flat area on the inside.

Replace the inner cheek pad and adjust the bite valve position to your liking
Note: depending on the helmet size, the white tube may need cutting down. The ideal position for the connector is as near to the helmet as possible.