iced drink cup

Common sizes range from about 12.5 fl oz up to 40 oz, with several options available between those sizes.

Glass tumblers are everyday, non-insulated glasses suited for cold beverages (not ideal for hot drinks). Insulated steel cups use vacuum or double-wall construction to keep drinks cold for many hours.

The main materials shown are glass for simple tumblers and stainless steel for insulated cups; some insulated listings specify 18/8 stainless steel.

Cold retention varies by design and model; listings report times from about 9 hours up to 40 hours. Several listings cite around 18 hours while some advertise up to 40 hours—check each product’s stated retention time for a precise estimate.