Cooling effect is good. I left my ice in the night and woke up in the morning and woke up.
I am satisfied with the quality and the capacity. I bought 2 sets for ~ 4 people family cup ~
I am impressed by the fast delivery and careful packaging. It will be better if the price is just a little better. ^^ It is much smaller than I thought.
Thermos vacuum insulation tumbler set of two cold cups 300ml 400ml / cold insulation