iced coffee mug

The listings mainly use three materials: stoneware, borosilicate glass, and stainless steel.

Cold retention varies widely by model and manufacturer claims. Listings include claims such as 11 hours cold, around 18 hours cold, up to 40 hours cold, and some even advertise "2 days iced." Expect performance to differ by design and testing conditions.

Several listings mention carrying or ergonomic handles, and many state the mug or tumbler is designed to fit most car cup holders.

Common accessories are lids and reusable straws. Some tumblers specifically list a removable straw or a multi-mode sip/drink/gulp lid.

Many listings are labeled for either hot or cold use, and some indicate suitability for both. Larger insulated tumblers in the results are specifically listed for cold beverages.