Here my score (1-5)
Appearance 1
Heat storage 2
1 closure
It stays long warm. The double lock is very good. Firstly, the click-lock and as an added "dist-protection" there the screw cap. Whereby the click-lock holds good tight.
After clicking on the average click-lock can be very pleasant enjoy his warm drink in a 360 ° radius.
Cleaning is also very good. The closure parts can be fairly complete (yet simple) disassemble and clean.
the only drawback is the somewhat low capacity - but it is enough.