The DOUBLEWALL TUMBLER is a stainless steel tumbler with a double wall vacuum seal.

The double vacuum structure means that the hollow layer is in a vacuum state, making it difficult for heat from outside to be transmitted, so it is less susceptible to the heat transmitted from your hands or the outside air, meaning hot items do not cool down easily and cold items do not heat up easily.

It doesn't get hot even when you touch it directly.

Also, since it does not condense, coasters are not needed, making it suitable for use around a computer or in environments where important documents are handled.

The thickness of the rim makes it comfortable to drink from, and the cut surface of the body and tapered shape give it a comfortable grip when held in the hand.