Others supply snow chains in a sealed bag and you may only be charged if you break the seal.
The Sun (2016)
Vanilla pods must be kept in a sealed bag or container - or in the sugar jar to make vanilla sugar.
Smith, Drew Food Watch (1994)
IF you do not want to scoff an entire bag of crisps, remove the clips from a clothes hanger and use them to seal the bag.
The Sun (2014)