The foil layer covering the inner wall reflects heat back inside, also contributing to excellent heat and cold retention. The design is so slick and effective, its such a perfect size, not too clunky and a spot-on amount of coffee.

When rust spots are found inside the tumbler, add warm water and citric acid in ratio of 10:1, wash with soft sponge after leaving it for 2-3 hours, and rinse well.The vacuum insulated TRAVEL TUMBLER is designed for people who lead a conscious and flexible lifestyle—for those who appreciate the subtle flavors of drinks at the temperature that is just right for your body. Double walled stainless steel tumbler, with a vacuum between its inner and outer walls, prevents heat transfer. I bought one after being jealous of my boyfriend telling me his coffee was still hot hours after we had made it!

For maximum insulation efficiency, preheat or precool the tumbler prior to use by filling in a bit of hot/cold water for 1-2 mins. The exterior is sturdy stainless steel while the interior is insulated and will retain drink temperature (hot or cold) for up to six hours.

Vacuum insulated tumbler retains the temperature of cold drinks for a long time, and the elastomer rubber on the bottom reduces impact when placing the tumbler on the floor. TRAVEL TUMBLER is designed for people who lead a conscious and flexible lifestyle—for those who appreciate the subtle flavors of single origin coffee and tea, or like to drink mineral water at the temperature that is just right for your body. Double walled stainless steel tumbler prevents heat transfer with a vacuum between its inner and outer walls.

The cap is simple without excess details and you can drink from any angle pleasantly, like drinking out of a glass or mug.I have been showing off this mug to everyone and now half my friend group has one across the colour range. The vacuum insulated tumbler has great heat and cold retention, and maintains the aroma and flavor of drinks for a long time. The foil layer covering the inner wall reflects heat back inside, contributing to excellent heat and cold retention.