Thermos Alta Tumbler

Thanks to its vacuum insulation technology, this tumbler is designed to maintain hot temperatures for several hours. While exact performance depends on the starting temperature of your drink and how often you open the lid, it is engineered to keep beverages hot throughout a typical morning commute or workday.

The lid is designed to be spill-resistant, meaning it effectively minimizes splashes and minor spills during everyday use. However, it is not classified as 100% leak-proof, so we recommend keeping it upright in your bag rather than tossing it in loose.

Yes, the compact 12 oz size is specifically designed to fit under most standard home coffee makers and espresso machines. Its low profile makes it a convenient choice for brewing directly into the vessel.

While the durable construction is built to stand up to daily wear, we recommend hand-washing the tumbler to preserve the integrity of the vacuum seal and the exterior finish over the long term.

No, the vacuum insulation technology ensures that the exterior remains cool to the touch regardless of the temperature of the liquid inside. You can comfortably hold the tumbler even when it is filled with piping hot coffee or tea.