Picture this: you’re running at your absolute limit. Your lungs are on fire, and you just can’t seem to catch your breath. Your legs might have a few more miles left in them, but your breathing is completely hitting the…

1 hour and 26 minutes at the Warsaw Half Marathon. Anyone who runs knows that at this pace and over this distance, there is absolutely no room for luck, improvisation, or—worse yet—untested gear. Every single seam that could chafe, or…