Good for an emergency,I heard someone talking about this on the radio.Looks like you have to buy the bottle and warmer,which would be expensive,and my babies are fussy about which bottles they use
I have a vague memory seeing something you put on your existing bottle to heat it instantly,like a heat pack
Bit expensive for everyday if it's £22 for just 100 uses.Wouldn't use it for night feeds,I have a plug in warmer does that in the time it takes to change a nappy,but for days out it would be really useful