Made of double-wall 304 Stainless Steel featuring vacuum-sealed construction;BUILT®'s high quality 20 oz. (591 mL) vacuum tumbler maintains the optimal temperature of beverages; Keeps your drinks cold or warm longer than a traditional tumbler; Includes durable, threadless Tritan™; lid easily slides open and closed for one handed drinking; Hand-wash only Do not place in freezer; Fits in most standard sized cup holders; Straw not included; Product Size: 2.56" w x 7.4" h x 2.56" d x 3.19" dia.;