Our top picks for the best coffee thermoses Best overall: Zojirushi SM-WR – See at Amazon Best commuter: Hydro Flask Coffee with Flex Sip Lid – See at Hydro Flask Most durable: Yeti Rambler ...
Equally impressive was the flask’s ability to keep drinks chilled – there were still ice cubes in our cold water after 24 hours. Should you prefer sipping hot tea and coffee from a cup rather ...