"RRS® Air Flow Hat: The RRS® Air Flow Hat is a lightweight running cap built for anyone who trains in warm or sunny conditions and wants reliable sweat management without the weight. Lightweight wicking woven polyester panels on the front, top, and sides draw moisture away from your head so it can evaporate rather than sit against your skin, keeping you cooler during longer efforts. The curved bill features a black underside that cuts down on glare, so you stay focused on the road or trail ahead instead of squinting into reflected light.The adjustable snap buckle lets you dial in the fit across a range of head sizes without needing a precise size selection, making it versatile whether you're grabbing it for yourself or sharing it with training partners. The woven polyester construction keeps the overall weight low, so the hat stays present without feeling heavy as your run gets longer. Together, these features make the Air Flow Hat a straightforward, dependable choice for daily training runs and outdoor activity in warm conditions.Why Our Fit Experts Love It""I grabbed the Air Flow Hat for a sunny morning long run and appreciated how the wicking panels kept my head from overheating even as the temperature climbed. The snap buckle dialed in the fit quickly, and the bill's black underside made a noticeable difference cutting glare on the open road."" - Michael, Road Runner Sports Fit Expert, Seattle WAWho It's Best ForThe RRS® Air Flow Hat is best for runners, walkers, and outdoor athletes who train in warm or sunny conditions and want a lightweight hat that manages sweat and reduces glare. It suits road runners and trail users alike who prefer an adjustable fit without committing to a specific size. VIP Family members can take the Air Flow Hat for a 90-Day test drive with our Perfect Fit Guarantee."