Double-wall vacuum insulation technology. Retains the temperature, flavor, freshness and nutritional value of the drink inside. Superior thermal retention to keep beverages hot or cold for up to 24 hoursLight wight, travel with ease, Best Quality Product And Best Gifting IdeaSimply Press The Button Once To Start The Automatic Stirring. Press It Again To Stop The Stirring.For Coffee, Tea, Hot Chocolate, Milk, Protein Shakes, Lemonade, Bouillon And Many Other Light Mix Drinks.Unbreakable, stainless-steel exterior and 18/8 304 interior. High quality materials: 100% rust-free, Food-grade, hygienic, 100% BPA-free, non-toxic, non-leaching