The bottle used my three year old daughter (now almost four) in the forest kindergarten. Main purpose - to have to take off use in winter without the thicknesses mittens. And that even with one hand. Funzt fine. I wash the bottle every day and therefore "lives" the heat not inside :) drinks remain highest four hours warm. Your expects but best with three, since each empty the falsities are, the faster cools the tea. What is logical.
Deduction for a price. That's a little too proud for me :)
