• 30 oz. (900 mL) BPA-free double-wall Stainless Steel vacuum tumbler with AS Plastic twist on lid. • Features 304 Stainless Steel interior, and 201 Stainless exterior and interior Copper plating for extra insulation. • The double-wall vacuum with Copper lining ensures your drinks stay hot or cold longer. • Hand-wash only. Do not place in freezer or microwave. • The slim design at base fits most cup holders