If you want your coffee or tea to be hot when you arrive at your destination, a double-walled, stainless-steel travel mug with vacuum insulation is your best bet. These thermal mugs keep beverages hot or cold for hours longer than plastic mugs. Stainless-steel mugs are durable and are more resistant to flavor transfer, but they are also more expensive.

Plastic travel mugs are a more affordable option, but they won't keep your drinks hot or cold for very long. If you do decide to purchase a plastic thermal mug, look for one that is made with polypropylene (recycling code No. 5) or advertised as free of bisphenol A (BPA). A number of health and environmental groups recommend avoiding containers made with BPA. According to the Environmental Working Group, BPA has been linked to reproductive problems and cancer of the breast and prostate.  

Some travel mugs can retain the flavor or scent of your beverages unless they are rinsed immediately. To remove the lingering taste and odor, Good Housekeeping recommends filling the mug with water and a teaspoon of baking soda for at least 30 minutes. Rinse thoroughly with plain water.

Reviewers say the following about shopping for travel mugs:

  • One-handed opening mechanisms are best. This is essential if you'll be using your travel mug while driving.
  • Some mugs with handles won't fit in car cup holders. If you'll be using your travel mug while driving, a mug without a handle (also known as a tumbler) is a good choice. Mugs with handles are a better fit for those who walk or take public transportation.
  • Some mugs must be washed by hand. Stainless-steel mugs typically cannot be washed in the dishwasher. These mugs also cannot be microwaved.
  • Spill-proof lids can be hard to clean. These lids, which often have complicated opening mechanisms, can trap liquid and gunk between their small parts.
  • Preheat or chill your travel mug for best results. Many manufacturers recommend filling your travel mug with hot or cold water for about 10 minutes before adding your beverage. This will improve the mug's insulation.
  • Choose your cleansers carefully. Manufacturers of stainless-steel travel mugs caution not to use bleach or abrasive cleansers to clean your travel mug. Plain dish soap is best.

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