Made of double-wall 304 Stainless Steel featuring vacuum-sealed construction;BUILT®'s giant high quality 30 oz. (887 mL) 18/8 double-wall stainless 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; BPA-free; Fits in most standard sized cup holders; Straw not included; Product Size: 3.85" w x 8.5" h x 3.85" d x 3.85" dia.;