Just wondered if anyone has experience of taking expressed milk out to bottle feed LO when out n about? I'm not overly keen on breastfeeding in public and, recently, LO has started messing about a lot when trying to latch on resulting in serious boob-flashage and spraying of milk all over the place (niiiiiiice). If I take a bottle of expressed milk out with us, does it have to stay cold til I use it? If so, how do people do this?! Thanks all.