Nuby rapid cool flask, help!

I’d probs say 3-4 hours

Nuby state 3 hours but when I have had hot water in mine I would say its 2 at a push, recommend using a thermos flask there much better x

I always did two hours to be on the safe side. Even if you make the bottle / hot shot part before needed as you get an hour or two before it has to be dumped (double check this as it’s been a while since I used formula)

If you put the white nuby lid on the flask and shake. Wait for a few seconds if the nuby sign turns red it means the water in the flask is still hot enough to kill bacteria in formula ☺️