It is a bit expensive as a thermos, but it keeps the water cold for 7+ hours for sure. Generally, it is recommended in the instruction leaflet not to put carbonated drinks because it does not clean easily. Always clean it by hand with warm water and a little soap, and NOT in the dishwasher because it will definitely ruin the design. I take good care not to drop it, but one day it fell in an outdoor area and a piece of the design came off from the bottom. Also, it has a protective bottom to prevent the annoying noise when you leave it on a table. If it was 10 euros cheaper, it would definitely be worth buying