Hot or cold, you can take your beverages anywhere you go! This 40 oz. travel mug/tumbler is made of stainless steel and features a solid ergonomic handle, lid, splash-proof straw opening (straw included) and double walled vacuum insulation that keeps drinks hot for up to 12 hours and cold for up to 30 hours. With a 3" diameter bottom, it will fit into any standard car cup holder.