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