Which thermos flask will be good for preparing bb milk formula? where can it be brought as well?

Tommee Tippee and Avent have really great thermos flasks that can be used everyday as well as for travelling. How about the Tommee Tippee Travel Flask Bottle? It has wonderful features which include: - a portable and convenient design - stores hot water to warm up expressed milk or water for a bottle feed - keeps water warm for up to 4 hours but will not maintain the original water temperature indefinitely so there is no danger of you accidentally scalding your hands in case you forget about the hot water contents at the end of the day.

A couple of my friends are using the Tiger brand thermo flasks. Think it can keep the water hot/warm for up till 10 hours or so. Another friend recommended Zojirushi. She bought this brand and it is capable of keeping water hot/warm overnight. You should be able to find it at any departmental stores. For Zojirushi, it is also available on this site: http://www.momorice.com/product-category/thermo-flask/