• BUILT®'s giant high quality 30 oz. (887 mL) 18/8 double-wall Stainless Steel vacuum insulated tumbler maintains the optimal temperature of beverages. • Made of double-wall 304 Stainless Steel featuring vacuum-sealed construction. • Keeps your drinks cold or warm longer than a traditional tumbler. • Includes durable, threadless Tritan™ Plastic 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.