Search results show reusable tumblers are commonly made from glass and stainless steel (including 18/8 food-grade and recycled 18/8 stainless steel). Lid components are frequently plastic, with polypropylene commonly used.
Results show a range of sizes: smaller glass cups around 12.5 fl oz and 16.75 fl oz, and stainless steel tumblers in sizes such as 14 oz, 20 fl oz, 30 oz, and 40 oz.
Many tumblers include lids and reusable straws. Common lid types in the results are flip-top lids, twist-off lids, multi-position or 3-way lids, and specialized sip lids; these are often paired with a straw or a reusable straw option.
Stainless steel tumblers commonly use double-wall vacuum insulation or vacuum-insulated construction. Some listings also mention a copper-coated insulation layer and construction from recycled 18/8 stainless steel.
Reviewer summaries frequently describe tumblers as sturdy and well made, noting solid build quality. Insulation performance and long cold retention are also commonly praised in reviews.
