The changing bag I bought doesn't come with a bottle insulator, and I'm wondering whether I should buy one separately or not. I plan to express breast milk and carry a bottle with me for convenience, to feed on-the-go. Obviously after expressing into a bottle at home, the bottle goes straight into the fridge. When I later use the bottle to feed baby, do I need to warm it, or does the baby drink it cold, or do I wait for it get to room temperature?
In other words, what do I need to buy in order to feed my baby with expressed breast milk on-the-go??
Thanks :)