Nike Air Streak Vapor IV Review
Despite the many flats I've tried this guy still remains the champ when it comes to weight. 5.5 oz takes the cake against any other flat I've seen besides the Mayfly (a 4.0 oz flat for racing designed only to last 100k). You can see from the picture that they look a little cushier than the RC2, and they are. The base on the Vapor IV is kind of cushy/foamy and it's pretty comfortable. It has these little slots in the foam, I guess they're for ventilation, but what they are awesome at is grabbing little pebbles. Get used to wedging these out with a pencil after a few runs.