For hot drinks, the temperature dropped ... in that space. Since heat transfer happens so slowly, your coffee stays hotter for longer.” Are vacuum-insulated mugs safe to use?

security and heat retention. We tested dozens of leading travel coffee mugs to put this ultimate guide together. Testing included tracking the temperature of our coffee over time, as well as ...

Stainless mugs tend to be insulated, and their combination of material and design effectively slows heat loss. The heat is reflected back into the liquid, helping to maintain its temperature for ...

There’s nothing worse than brewing the perfect hot cup of coffee only to find it lukewarm and lifeless a short while later. ...

This was a tough call in our best travel mug with a carry loop The Klean Kanteen Insulated TKWide ... in case issues arise. Temperature retention: To test heat retention, we filled each mug ...