What bottle warmer can I use for the comotomo bottles? Avent and dr brown don't fit for the 8oz size bottles

I realised that thermal bottle warmers warm up milk just as well. You could consider the Tommee Tippee Closer to Nature Travel Bottle Warmer. It's a thermal flask with a container which is very wide. You pour hot water into the white container and place a bottle of milk into it. Swirl the bottle around a bit and the milk gets warmed up. http://www.pupsikstudio.com/tommee-tippee-closer-to-nature-travel-bottle-and-food-warmer.html