insulated cup with lid

Insulated cups with lids commonly range from about 12 ounces up to 40 ounces. Common sizes shown include 12, 14, 18, 30, and 40 ounces.

Thermal retention varies by design. Many reusable tumblers advertise cold retention of about 18–40 hours, while travel mugs designed for hot drinks commonly list hot retention around 6 hours.

Common spill-preventing features include splash‑proof slider lids, silicone or spill‑proof straws, fully sealed or leak‑proof lids, and multi‑position lids with covers or closures.

Travel mugs designed for hot drinks commonly have capacities around 18 ounces, use vacuum or double‑wall insulation, and offer adjustable sip or temperature‑adjusting lids (for example, adjustable sip openings or secure screw‑on lids).

Listings will often say a cup is “cupholder friendly” or “fits standard cupholders.” Some items also provide a base diameter (for example, one listing gives a 3.15‑inch base)—check the product’s base measurement or compatibility note to be sure.