Hi
I would like to warn people about a problem I had recently.
I bought an Aladdin thermos (Stanley) and it appeared fine . However a few weeks later I went to use it and discovered it had no heat retention.
I proceeded to investigate which required damaging the case ( they are not designed to come apart they are glued up real good) The base of the flask had rusted through so had no vaccum I highly recommend you research the thermos and get the seller to test it to make sure it is working as it should.
I have also had some poor performing thermos from Stanley bought brand new from a shop so was able to get refund Have since had Good experience with Thermos brands they have a thermos king range which performs better than any others i have tried.
Ps stay away from bullet style thermos' especially the ones with pushtops even the Thermos branded ones in this style are total rubbish