Are double wall glasses worth it?
Online Answer
Because of the extra wall of glass, double-walled glasses are able to keep your drink insulated for a longer period of time, so your coffee won't get too cold (or warm) as you continue to work or read the daily news. These double-walled glasses are typically pretty sturdy.
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Everyday Mugs The clear borosilicate glass on these mugs is double-walled so the outer surface will be cool to the touch, while the drink will stay warm (or cold) for even longer. They are also dishwasher and microwave safe.
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