Whole milk

His milk is mixed with porridge. So we just make a bottle before we leave. And just take food. 9/10 on long days he eats food/snacks and won’t need a bottle until we get back. But if anything, we put some porridge in his flask in case.

Ice pack & insulated lunch bag

I buy the Horizon organic milk on the go pack at Costco, it comes with 18 individual milk cartons that are good at room temperature and I carry that in my diaper bag. My daughter loves it!

Insulated stainless steel canister with a twist top. Keeps the milk chilled