Best insulated mug or small flask

[sheepdreams]

Hi wonderful mumsnetters. I am seeking recommendations for an insulated mug or small flask that will keep my coffee hot. In addition to this I want the flavour of the coffee to remain untainted by the flask. Any reasonably priced recommendations?

Saw this thread, looked at the prices and decided against as I wouldn't use it often.
In Asda yesterday, Contigo mugs on sale at £10 each. Bargain.

And I will use as I am thinking of making coffee at night and taking a full mug to bed with me. It will be perfect to drink 7 - 8 hours later.

That’s great thank you. A bargain at £10.00