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The double wall actually works—my tea stayed hot for over two hours while I got through a long meeting. It’s hefty but balanced, and the 28-ounce size means I’m not refilling every ten minutes.

I was skeptical about the 28-ounce capacity being too big, but now I can't go back to a smaller mug. The stainless steel keeps my tea hot for over two hours during long meetings.

I was skeptical a 28-ounce tumbler could keep my tea hot through a long work morning, but this double-walled one actually does. The steel feels sturdy in hand, and the size is perfect for skipping refills. Just remember it's hand wash only, which is the only small hassle.