You know how it goes - you settle down at your desk with a hot cup of coffee. Then you get absorbed in what you're doing, and when you raise your cup to your lips, you get a nasty mouthful of cold brew. If you have a USB port you can spare, that doesn't have to happen anymore. These cool mug warmers are a fun nod to the past - the era of the floppy disk. They'll keep your coffee nice and hot while you pull a long shift. Who would have thought - there really ARE still uses for floppy disks!