The Travel Mug of EMSA is close to 100%. One can the cup on its side or upside down, it runs not a drop out. The isolation is really very good. From the outside you can feel no heat, the coffee stays hot for hours.
The Travel Mug has no classical drinking spout, but it can cause the cup at any point to the mouth. The beverage then runs out very uniformly and without splashing. Since the liquid has to run a few centimeters from the exit from the cup to the mouth, the danger is getting scalded lower than other Isolierbechern.
The cup can be beyond disassemble very good and clean.
The rubber sleeve also like it very much, because the cup is non-slip in hand.
All in all, this mug is the first, which I'm really pleased and is dense and keeps drinks hotter for longer. I can therefore only recommend 1 times spend more money and buy a reasonable quality.
Who buys cheap, buys mostly severalfold!
Update 04/2015: After 3 months of continuous use, the cup is still 100% tight and I am still very satisfied!