What Our Gearhead(R) Experts Are Saying:"Perforations and CLIMACOOL together mean this cap actually breathes instead of just sitting on your head trapping heat. The pre-curved brim stays put on faster efforts and the adjustable back gets you a snug fit without fuss. Light enough that you forget you're wearing it."Late miles in direct sun have a way of compounding fatigue fast. The Adidas Run x Adizero Cap is built for exactly that stretch of a run, with laser-cut perforations that keep air moving and CLIMACOOL technology that wicks and disperses sweat before it becomes a distraction. The pre-curved brim handles glare without obstructing your sightline, and the whole thing sits light enough that it stops registering after the first mile.