Hydro Flask Vacuum Coffee Flask lets you enjoy your coffee anywhere you go. It has a double insulation to keep beverages hot for up to 12 hours, and comes with a leakproof lid so you can sip without worry.1-Durable, sweat-free, and slip-free.2-Flex strap for easy transportation.3-Fits under most coffee brewing systems.4-Dishwasher-safe.