Smart LED Temperature Display: Touch-sensitive LED display allows you to quickly and easily see the temperature of your drink. It has a double-wall vacuum insulation to keep hot or cold beverages hot or cold for a long time. Premium Stainless Steel Construction: Durable, rust-resistant and built to last for everyday use. Leak-proof and portable design: Easy to carry to office, travel, gym, school, outdoor and daily use. Multi-Use Insulated Flask: For water, tea, coffee, juice and other hot or cold beverages.