I'm going back to work soon . Can the mummies share how you wash the pump parts in the office and how to transport the milk back home fresh ? What kind of cooler bags do you use ?

What I usually do is keep the pump parts in the fridge after use. For second pump, I'll just reuse the same pump parts. Except bottles because my milk are for next day use so I'll bring 4-5 bottles to work per day. I'm using Medela (square) cooler bag to transport my milk.