Made of superior construction
Made of a Stainless Steel 18/8 Food Grade with Copper lining, you get the best of both worlds. The Koozie Hartwell keeps your drink cold up to 12 hours, or hot up to 7 hours. You can turn it upside down, throw it in your bag – it won’t leak! With its double wall construction, say Goodbye to damp or frostbitten hands. Keeps your hand dry, no condensation. No stain, no corrosion and BPA free.