Posted by a reviewer on Amazon

I have knocked it over deliberately and give it a good shake it has never leaked

Posted by a reviewer on Amazon

It stays cool on the tube to work and at the office and when i tested it with some hot soup taken in for lunch the soup was still piping

Posted by a reviewer on Amazon

Just received this flask and only tried it with hot not cold liquid

Posted by a reviewer on Amazon

First thing you notice about this bottle is the presentation theres a definite wow factor when you receive this with the way its packaged the tubular box it comes in just shouts high end product

Posted by a reviewer on Amazon

It wa sin his backpack and it did not leak

Posted by a reviewer on Amazon

It keeps cold water cold for longer of course i found that almost ice cold water was still very cold overnight but i think the 24 hour rating is not accurate as it increased to room temperature at around the 12 hour mark

Posted by a reviewer on Amazon

I find that heat escapes very easily at the neck and bottom of the bottle which are constantly hot or cold when you fill it up so this is a weak point of the bottle

Posted by a reviewer on Amazon

It certainly keeps liquid cold or hot though the claims of 24 hours and 12 hours respectively might be slightly exaggerated