Premium construction materials and finish, this vacuum flask comes with a wide mouth opening so you can really guzzle down water (or whatever) when you’re hot and sweaty at jiujitsu. Not recommended to guzzle down hot soup or anything, and there might be hot soup in there because it is a vacuum flask which means it magically keeps hot things hot as well as cold things cold! Yep, not quite sure how that works but I think it is magic.
