Capacities in the listings range from 7 ounces up to 40 ounces. Common sizes include 7 oz, 12 oz, 14 oz, 15 oz, 16.5 oz, 32 oz and 40 oz.
Listings show tumblers made from glass (including borosilicate), plastic/polypropylene, and stainless steel, often with silicone components; some models also include bamboo lids.
Most listings note the tumblers are dishwasher-safe—often specifying top-rack only. A few call out components to hand-wash, especially bamboo lids.
Features commonly listed include sealed or twist-on lids, spillproof silicone straws or straw valves, and flip-top or airtight lids designed to reduce spills.
Common extras are lids and reusable straws, silicone sleeves for grip, straw-cleaning brushes, and, in a few insulated models, inner ounce markings or handles.
