Title: Best Vacuumed Sealed Cup Ever
Review: I believe this is the BEST insulated and convenient tumbler in the market. It is metal vacuumed insulated inside (durable and keeps liquid hot longer than the plastic ones) and pretty much spill proof (if you accidentually tip it over - maybe a drop or two). Other tumbler designs make you twist, flip, or unscrew which risks spillage until reclosed. This tumbler opens when you press the button on the side to drink, then automaticall closes when you release the button - VERY CONVENIENT one handed operation. I use it almost every day for coffee. I plan to buy 1 to 2 more of these great tumblers. Note, it may be too wide to fit some car/van cup holders.
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