Typical travel-mug capacities start around 10 oz and commonly include 12.5 oz, 16 oz, 18 oz and 20 oz options; larger tumblers are also available (examples up to about 40 oz). You’ll see choices across that full range depending on style and brand.
Listings commonly note cupholder‑friendly dimensions or explicitly state cupholder fit, include ergonomic handles for carrying, and sometimes add a silicone base for grip. A number of tumblers explicitly say they fit standard car cupholders.
Many travel mugs use flip lids with internal threads or slider closures that are described as leak‑resistant or leak‑proof; some lids are splash‑proof or designed to seal when closed. Reviewer feedback often highlights the most leak‑resistant designs.
Some mugs include built‑in temperature control with a rechargeable battery, LED indicators, and controls via an app or charging coaster. These let you set a target temperature (example ranges shown around 120–145 °F) and maintain it for roughly 1.5 hours in the examples cited.