Designed to keep your drinks piping hot or icy cold, the Klean Kanteen Insulated bottle is made with 18/8 food-grade stainless steel. The sturdy double walled construction and vacuum insulation means your bottle will be with you for the long haul. Easy to clean and stainless steel design doesn't retain or impart flavors, so your lemonade will never know you were drinking a latte yesterday.