Very practical, but with a small defect

I bought these thermos for the university to drink throughout the day tea, without the latter being cold or I have to run to the bakery for new constantly. For the filling volume of 1 liter is pretty much perfect. It fits into it enough liquid to come over a longer day.
+ Also keeps very good warm. Even after 8 h, the content still warm (have been nothing even longer kept in it, guarantees it lasts longer warm).
+ Very beautiful are the two covers. So you can screw the optional second if you want to share some of his drink
+ There is a carrying strap which you can attach to the black handle optional. Thus, the bottle sometimes worn over the shoulder as a small bag
+ It looks good and is the size appropriate, I think. (At first I'm startled by the size, but it fits too sometimes a liter into it!)
+ Will keep you very close, but ...
- ... Cocoa is once leaked me. I do not know whether it was the cocoa itself (I've only once and never again made) or to me, but it has left some liquid. Otherwise, no problems with the seal.
- The cover (ie cups) are double indoor plastic, stainless steel exterior. Attached are the two layers of glue. However, one of my lid is glued stupid, so that the two layers have detached from each other. This allows the lid screw is not so good anymore. Troubleshooting: Orders purely tilt adhesive and press the inner sleeve back into the outer

The two negative points I now know, of course not if this is the norm in this product, but I can also give only my subjective evaluation. Overall I would recommend this product to anyone who much tea / coffee needs throughout the day, but does not have time to constantly buy a new one.