Which size of the fridge-to-go cooler bag is recommended? Mini or Victoria?

It depends on how much milk you need to transport. The mini can accommodate less and the Victoria more. But in terms of cooling capacity, both will keep your milk chilled for a max of 12 hours. Also, the Mini is cheaper!

Think it depends on two factors - how Ng has milk You have to transport and how much weight/size of bag you can carry. Also at $99 the Victoria fridge to go is expensive!