Ksh 2,000
In Stock
Brand:
Travel Tumbler
SKU:
UNB-VAC-616
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Product Description
Double-walled construction:
Vacuum flasks have two layers of walls with a vacuum in between. This vacuum prevents heat transfer by conduction or convection.
Silvered surfaces:
The walls facing the vacuum are often silvered, which minimizes heat transfer by radiation.
Airtight stopper:
A stopper or lid is used to seal the flask, reducing heat transfer through evaporation.
