Double wall 18/8 stainless steel copper vacuum insulated tumbler with clear push-on lid.
The vacuum insulated body and copper plated inner wall help retain the internal temperature of the tumbler longer.
The copper plated inner wall can make a difference of nine degrees over 24 hours and prevents heat from entering or exiting the tumbler by thermal radiation.
Keeps contents hot for eight hours, cold for 16 hours.
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