James Robertson pipe bag seasoning can be used for hide and sheepskin bags to preserve the skin and help with moisture absorption.
To ensure your pipe bag is airtight, you should cork the stocks and inflate the bag using the blow stick as normal. The pipe bag should remain fully inflated for at least 1 minute if airtight. If not, then your pipe bag will require seasoning.
(For use with Hide and Sheepskin pipe bags only)