This beer growler has a vacuum insulated body and foam insulated lid. It is made of 18/8 stainless steel so it won't rust and is naturally BPA Free. The heavy duty handle makes it easy to carry and pours smooth with one hand. Has a steel inner lid so no plastic contact for your beer. It is dishwasher safe. Keeps beer cold for 24 hrs. Keeps iced drinks cold for 100 hrs. Keeps liquids hot for 18 hrs. Lifetime Warranty.