Houro1 At $19, and selling with an optional insulated sleeve, I would highly doubt it's double walled, especially when nothing is calling it out specifically in the details when that's typically a major selling point.
Poking around in google also appears that it is NOT double walled.
Houro1Took another look at the pictures - it's concerning to me that it's listed as "vacuum insulated" on the side, when I've found confirmed reports that this most definitely is not. Even the Asobu site listing makes no mention of being double walled.
Buyer beware.
wibblesWell to the best of my knowledge double walled SS containers are usually vacuum sealed once the two walls are joined (welded) however like many products offered the skew the issue because it does have a rubber seal at the stopper but to me that really does not qualify as vacuum sealed since the air is not sucked out of the remaining airspace within the canister. And they sure did not mention the user had to try and suck it out by mouth:-0 LOL