http://greatpresentsformen.com/blog/2013/05/11/kitchen-gadgets-keurig-platinum-brewing-system/ Visit this page for more information on the Keurig coffee brewing system. Instead of filling a kitchen mug with coffee from your Keurig, then pouring that into your tall thermos mug, you can make the coffee directly in your travel mug. Just pop out the bottom ledge, make the coffee in the thermos, and put the ledge back in its place.