Both making coffee and keeping it hot the Kalorik Thermo Flask Coffee Maker Coffee Maker is a great choice for any kitchen. Double wall help keep coffee piping hot.The Kalorik Thermo Flask Coffee Maker Coffee Maker features a double walled, vacuum sealed pot that keeps coffee fresh. The drip tight spout keeps thing neat and tidy. Two water level indicators make it easy to see how much liquid is inside this coffee pot. This coffee brewer uses cone paper filters type 4. Made of plastic and glass.