I just bought him these. (At his request!)
They are the controversial Spira Stingers. I could care less what they are called though, I'm just kind of pissed that Matt has a pair of yellow shoes before I do. I've been shopping yellow flats for the last year and a half with no luck. Matt reads an article about the springs in these sneakers and BAM!, yellow shoes.
I've been searching for a pair of yellow flats that I love forever. Not fair.