thermos insulated coffee mugs

Retention times vary by type and model: smart temperature‑control mugs maintain a set temperature for about 1.5 hours (battery‑limited); many vacuum travel mugs advertise keeping drinks hot for up to about 6 hours; large tumblers in these results report longer cold retention — examples include roughly 11 hours cold or advertised “2 days iced.” Actual performance depends on the specific mug and usage conditions.

Most insulated mugs use stainless steel (commonly food‑grade 18/8) for the body. Some designs incorporate ceramic or polycarbonate interior coatings, and lids or small components are often plastic—frequently polypropylene.

Capacities in these results range from about 10 ounces up to 40 ounces. Common travel sizes include 10 oz, 16 oz, 18 oz, 20 oz, and larger 40 oz tumblers.

The most common construction is double‑wall vacuum insulation (vacuum insulated). Other approaches seen in these results include copper‑coated insulation layers and a few tumblers that list triple‑layer insulation.

Smart temperature‑control mugs in these results include a built‑in rechargeable battery (about 1.5 hours of runtime), a charging coaster, Bluetooth connectivity, and a companion app for setting exact drinking temperatures and using presets.