ThermoFlask Coffee Mugs

The double-wall insulation is designed to maintain your beverage's temperature for up to 6 hours. While this is excellent for a morning commute or a slow-sipping workday, keep in mind that the lid is splash-proof rather than airtight, which can slightly affect long-term heat retention compared to a fully sealed travel tumbler.

While the stainless steel construction is durable, we recommend hand washing these mugs to preserve the integrity of the insulation and the finish of the exterior. Harsh dishwasher detergents and high heat cycles can degrade the vacuum seal over time.

No, the lid is designed to prevent minor splashes and spills during normal use, such as walking or sitting at a desk. It is not leak-proof, so you should not toss these mugs into a bag or backpack where they might tip over.

The set includes 355 ml and 474 ml capacities, giving you flexibility based on your drink choice. The smaller size is ideal for a standard cappuccino or flat white, while the larger size accommodates a standard drip coffee or a larger tea serving.

Yes, the silicone base provides a significant amount of grip on smooth surfaces like glass, wood, or laminate desks. It also helps dampen the noise when you set the mug down, which is a nice touch for quiet office environments.