Everyone needs their own wine sippy cup! And this is the perfect stemless wine cup for camping, boating, the outdoors or anywhere you don’t want to use a regular wine glass. This travel tumbler is 2X heat/cold resistant compared to normal travel wine cups and plastic tumblers. Polar Camel tumblers are 100% BPA free and built to last.Engineered with 18/8 kitchen and food grade stainless steel, they are durable, corrosion resistant and rust free. The lid is made from shatter resistant plastic! These tumblers are powder coated with a matte finish and they are sweat-free.