Handle? I do not need that!
Closure? Really tight and safe from drops, also meaningful space-saving design.
Isolation? Great. Boiling hot tea needs in sealed beaker min. One hour to reach drinking temperature.
Processing? As expected for the price: top!
Cleaning: Yes, here be revealed a few weaknesses. The closure is def. what for the dishwasher and should always relatively shortly after discharge (if you coffee, cappuccino, tea, etc. there was) thoroughly rinsed and dried. Otherwise it mufft quickly. Otherwise the thing regularly in the dishwasher and tranquility.
Nevertheless: Top part. And really the best cup, I know!