30 oz 304 (18-8) Stainless Steel, Double Wall, Vacuum Insulated Tumbler with Splash Proof Lid-by Kitchsmart;

This tumbler is designed to make your life easier. You will no longer have to worry about your cold drink getting warm, or your warm drink getting cold. Our tumbler is designed to keep your beverage the temperature it was meant to be. With our sliding lid, you can close it before taking it on the go and you'll no longer have spills or messes. This also prevents debris from getting inside, while you're away from your drink. Your hands will remain comfortable and dry, as there is no condensation or heat/cold transferred from the tumbler, thanks to its 18/8 stainless steel, double walled, vacuum sealed construction!