Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
I really enjoyed my coffee in this portable mug/thermos, so much so that after having it for a couple of weeks, decided to sell it as a pre-owned item and go for a 20 Oz size; the reason being that I could have a very large size espresso made by my favourite barista in the morning, and have it most of the day. Highly recommend the product, although a bit pricey!
Very functional in every aspect. Easy to fill, clean, and drink from. Hold temperature extremely well. Anyone who's had a Zoji, will know you have to put ice cubes in a hot drink before its cool enough to drink. Have had in in the car in 40deg C heat, and even after a few hours its still ice cold.
I have 5 Zoji's and they are all bloody good.
I tried a Pelican 2L flask (being a very big name and all), it was equivalent to using a plastic PET bottle compared to these.
I would never hesitate to recommend Zojirushi flasks. My first one has dings in it from some pretty big drops, still works like it did when new.