Our tainless Steel Vacuum Insulated Tumbler's size is 20 oz. Stainless steel tumbler has a convenient size that fits in most cup holders for an effortless commute with your preferred drink at hand. Its double wall vacuum sealed construction and copper lining will keep your drink hot for 8 hours and cold for 12 hours. The smooth slider and ergonomic mouth opening make drinking easy, and the press-on lid keeps drinks safe. The tumbler also has a durable powder coat finish. BPA Free.