Real bubbee is small and light! I put the pump parts in a Ziplock and into the cooler bag with ice packs. It lasted me for 2-3 pumps, which is sufficient for quite a long time outside. Otherwise you could just bring hot water and rinse the parts.
I used to bring my spectra out, pump in the car and almost everywhere as Long as you have a nursing cover.
I have a real bubee. it's cheap and light!
use freemie or spectra cups
i use freemie
Tracy Chin