Wow. This is quite a concept. I'm drinking one of the french vanilla lattes right now. Bought a four-pack at Kroger last night for $5.99.
It's really cool how they work.
First, you turn them over, pull off the protective thingy and push in on a button. Then you let it sit for 5 - 10 seconds, turn it over and watch the heat indicator turn from pink to white in about 6 - 8 minutes.
And, it really gets hot.
Which is very cool.
No it ain't Bongo Java, but it will do in a pinch.