Here is the solution to warming babies bottle and food while on the go the Tommee Tippee Bottle and Food Warmer. NO ELECTRICTY NEEDED. This is such a clever simple disign. In a nutshell you fill the stainless steel (thats right no plastic here) with boilding water, seal it tight and take the unit with you. It is small, so no worries there. Then when you are ready to heat a bottle or warm up some baby food, just poor some of the hot water into the carafe, add your bottle or food and it will warm up in just a few minuites. Simple. Small. Clever.