Asobu G2G Beer Growler

how am i supposed to shotgun this

It's NOT double-walled, nor is it insulated. Base price for this product should reflect that. You're much better off spending real money for a tried & true consumer tested product. There are several on the market that can be acquired at a discount if you search the web. My personal favorites (and highly recommended in terms of cold/hot preservation at room temperature) are Drink Tanks & Hydro Flask, (both based out of Bend, OR. (like EVERY other product they are manufactured overseas BUT... QC is very high!) Yeti comes close and Clean Kanteen is newer at the game. Seriously, this product description is leaving a lot of gray areas in terms of 'insulate qualities' at room temp over time.

Well 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