Design
Looks modern and high-quality workmanship from
Functionality
It stays pleasantly cool. So far I have the bottle but also can not test in extremely hot temperatures. The liquid remains tightly closed right where they should be and the amount can be metered well when drinking through pressure. In addition, you can easily grab the wrong one in the dishwasher.
Overall, a good product at a fair price-performance ratio. Therefore I a strong buy recommendation.