Insulated Travel Mug double stainless steel walls. PVC Coated for improved grip on your Morning liter (Almost) of Coffee. BPA Free Lid and narrowed base to fit most Cup holders in commuter vehicles. Will also keep your Summer time cold beverage cold so you won't have to leave the dock party in search of a fresh cold drink. These are so famous its mentioned in a country song " But it could buy me a boat It could buy me a truck to pull it It could buy me a 'Insulated Travel Mug 850' iced down with some silver bullets Yeah, and I know what they say, money can't buy everything Well, maybe so But it could buy me a boat " Buy Me a Boat Song by Chris Janson