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Common capacities shown in listings are 20 ounces and 40 ounces.
Most listings show stainless steel construction, and many describe double-wall insulation for temperature retention.
Many listings state they fit standard or most cup holders and include dimensions to confirm compatibility.
Common features include included lids (no-spill or leak-proof), handles on larger tumblers, and designs sized to fit cup holders.
They are described for both hot and cold beverages, with examples including coffee, tea, lattes, and cocoa.