i mug

Common materials shown across the listings include stoneware, ceramic, borosilicate glass, stainless steel, polycarbonate and plastic.

Capacities shown across the listings include 10 oz, 12.5 oz, 14 oz, 15 oz and 16 oz.

Across the results, heights range from about 2.95 inches to 6.26 inches, and widths range from about 3.75 inches to 6.11 inches.

Temperature-control mugs use a smart charging coaster that connects via Bluetooth. The companion app (iOS and Android) lets you set exact drinking temperatures and customize temperature presets.

Battery life is described around 80 to 90 minutes (some listings cite about 80 minutes or 1.5 hours). The temperature range shown in listings is approximately 120°F to 145°F.