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SUPERIOR INSULATION
- Aug 13, 2018 -

the copper plating on the inner wall is an extra

line of defense against temperature transfer. heat

escapes much slower so your hot coffee stays

hot even in a snow storm, and heat enters much

slower so your ice water doesn’t melt even under

a blistering summer sun. on average, copper

vacuum insulation can make a difference of up to

9°F (5°C) over the course of 24 hours