A travel mug is designed for taking hot beverages, such as coffee, tea, and hot chocolate, along while traveling. Travel mugs are most frequently used when traveling by car. However, they can also be used for carrying beverages on board buses, trains, and even boats. Though travel mugs are frequently used in vehicles, they also make frequent appearances at parks, sporting events, meetings, malls, and similar locations.

A travel mug usually has a spill-proof lid. This lid is designed to keep liquids from spilling out when cars go over bumps or as the result of the user's bouncy stride. The spill-proof design is also helpful for keeping heat inside the cup. Many travel mugs have mechanisms that allow the user to take a quick sip of his or her beverage and reclose the lid with very little effort. This type of lid is often referred to as a spill-proof, drink-through lid.

When choosing a travel mug, many individuals recommend avoiding those with snap-on lids. These lids are known to pop off at the most inopportune times, sometimes causing painful burns. Even if users manage to escape burns, they may not be as fortunate when it comes to spills and stains. Screw-on lids are considered a far safer travel mug alternative.

Typically, travel mugs are insulated, keeping beverages hot and hands comfortable; some people recommend choosing a double-insulated travel mug for better performance. Though plastic travel mugs are available in a variety of colors, many recommend buying one made of stainless steel. Stainless steel travel mugs are easier to clean and are said to keep beverages hot for a longer period of time. If you decide to opt for a plastic travel mug, it may be helpful to choose one with a stainless steel liner. The deterioration common with plastic-lined travel mugs leads to off-tasting beverages.

One of the most beneficial travel mug features is the design of its base. Unlike regular mugs, these mugs are made to fit easily within vehicle cup holders. However, some people have a preference for wide-base mugs that are incapable of fitting in most cup holders. If you prefer this type of travel mug, consider one with a nonslip bottom to help you avoid spills.