Anyone Tried This?

Tayste
I know it's really extra but I thought it would be convinent since I live upstairs and would have to walk down stairs, through the living room (where my dad, his gf, and my baby sister are sleeping) to make bottles every time he wakes up hungry. I've also looked at bottle warmers but I don't know how long a bottle can be made before it goes bad? Any feed back on this product or others would be greatly appreciated!