The Izzy 40 oz. Travel Mug is the perfect tumbler for those who love to indulge in their favorite beverages, or simply want to stay hydrated throughout the day without the need for frequent refills. The exterior of the mug is made of durable stainless steel material which can withstand the wear and tear of daily use, and the interior of the mug is lined with plastic which keeps the mug lightweight for carrying around. And, its tapered base allows it to fit most cup holders from a car to a baby carriage. The Izzy comes with a transparent push-on lid with slide closure to reduce spills and the included drinking straw is a great option for those who like to sip while on the go. FDA compliant and BPA Free.