Hydro Flask’s double-wall, vacuum-insulated, stainless steel water bottles are known to keep beverages cold or hot all day long, and the same goes for its coffee mugs. The Wide Mouth Mug keeps cold ...

This bestselling mug is made to keep your beverages hot or cold for hours through a vacuum-insulated design, according to the brand. The air between the layers of stainless steel is removed, which ...