Listings cover sizes from small toddler cups to large tumblers. Common capacities shown include 7 oz, 10 oz, 20 fl oz, 30 oz, and 40 oz.
Smaller and toddler cups are often made from plastic, while insulated tumblers are typically stainless steel. Several listings specify 18/8 food‑grade stainless steel, and some note recycled 18/8 stainless steel.
Cold retention varies by model and insulation. Listing examples range from about 9–11 hours for some tumblers up to around 40 hours (about 2 days) for others. Check the specific product details for the exact cold‑retention claim.
Common accessories include reusable or removable straws and the lid itself. Some listings also include a straw‑cleaning brush and, less commonly, a removable handle.
Many listings state BPA‑free construction. Several call out food‑grade 18/8 stainless steel, and a few note the use of recycled 18/8 stainless steel.