Following the wild success of the Streak XC 2 comes the Streak XC 3. Nothing has changed here, except for the graphics, which is a good thing. The Streak XC 3 is light (5.4oz), has a simple mesh upper and a low heel to toe differential (4mm). All this makes for a shoe that is a favorite among runners desiring a fit for the "less is more" ideal and it is a terrific performer for intervals, XC races and 5K/10K road races.