2/3 L Thermal Bottle Outdoor Climbing Camping Sport Vacuum Flask Double Portable Stainless Steel Thermos Mug Large Capacity - AliExpress
Air pot 3 L pump mechanism : Stellinox
3 Liter Airpot Beverage 24hr Hot Coffee Dispenser with Push Button – EcoQuality Store
Air pot 3 L pump mechanism : Stellinox
Amazon.com: Milton Beverage Dispenser 3500 Hot Water Airpot with Pump Flask to Keep Drinks 24 Hours Hot and Cold, 3580 ml Double Walled Insulated and Lightweight Lab tested Thermos Perfect for Coffee