This stainless steel mug is vacuum-sealed to keep beverages hot for up to five hours, and cold for up to 20 hours with ice, according to the brand. All parts of the mug are also BPA-free, ...

Abusive Lab Test: Stainless Steel Travel Mugs. We spill hot coffee everywhere (and measure mug heat retention) so you don't have to. By Seth Porges Published: Apr 07, 2010 9:45 PM EDT.

The Zojirushi Stainless Steel Mug offers exceptional insulation properties and overall quality. Here's why it stood out as one of the best options on the market.

It's actually a goddamn stainless steel travel mug. It's the latest piece of Cyber-branded junk to come from Tesla, following the CyberHammer – which cannot be used as an actual hammer .