Capacities range from small training sizes up to large insulated tumblers. Listed sizes include: 7 ounces, 12.5 fl oz, 16.75 fl oz, 16 ounces, 18 ounces, and 40 ounces.
Some insulated listings claim cold retention up to 40 hours and hot retention up to 6 hours. Several items specifically note dual-wall or vacuum insulation as the reason for extended temperature control.
Common safety and material features include BPA-free or "made without BPA" labeling, non-toxic and lead-free materials, and occasional notes about renewable or recycled content for cup or lid materials.
Portability is emphasized for many items (disposable or travel-friendly). Several insulated tumblers explicitly state cupholder compatibility or say they fit standard cupholders, while other listings note portability without a specific cupholder claim.
Common extras include lids of various types, included or reusable straws, handles on larger tumblers, inner ounce markings, and multi-glass sets for glassware.