tumbler cup with lid

Capacities in this set commonly range from about 18 ounces up to 40 ounces. Common listed options include 18 oz, 20 fl oz, 30 oz, and 40 oz.

Available styles include flip-top and drink-thru lids, multi-position or 3‑in‑1 lids for sipping or gulping, sippable lids with straw holes, and lids designed to work with removable or built-in reusable straws.

Most tumblers use stainless steel construction—often specified as 18/8 food‑grade or recycled 18/8—and employ double‑wall or vacuum insulation. Some listings also mention copper‑coated or triple‑layer insulation for enhanced thermal performance.

Temperature retention varies by model. Cold retention is often measured in hours and can extend up to about 40 hours (some listings note “2 days iced”); examples for hot retention include roughly 6 hours, while other listings show intermediate cold times like 9–11 hours.

Lid materials listed are mainly plastic varieties, including general “plastic,” polypropylene, and copolyester.

Lid features described include rotating multi‑position covers, seals that hold reusable straws in place, splash‑resistant openings, push‑button leak‑proof lids, and dedicated locks to help prevent spills.

Many listings call out food‑grade 18/8 stainless steel and state BPA‑free construction. A few also specify lead‑free or explicitly note freedom from BPA, lead, and phthalates.