The large opening for filling is super. The dishwasher, the bottles have now already survived more than 1x and look like new, in other words: the imprint not peels off like other water bottles over time.
The cover fits like bomb, no overspeeding, no leakage and so easy! Not like the cheap bottles, where to put 3-4 attempts to get a drip cover to secure a bottle.
Conclusion: Perfect, easy to use, easy to clean - thumbs up!
