Cast-iron kettles have been sexy for the longest time already. They're also functional! They can keep brewed beverages at the right temperature for hours. So leave it to a bunch of architects to make it even sexier.

Copenhagen-based Norm Architects' Thermo Kettle Jug is both pretty and pragmatic. It will keep up to one liter of your favorite beverage warm for over six hours. Check it out here: [Gessato via Cool Material]