"RRS® Endorphin 5 Panel Hat 2.0: The RRS® Endorphin 5 Panel Hat 2.0 is a unisex running hat built for daily training, early morning miles, and all-season use. Laser-cut ventilation increases airflow across the crown to keep your head cooler during sustained effort, while the lightweight 5-panel construction sits low-profile so it stays out of the way whether you're running easy or pushing hard. A retooled fit and silicone pull tab closure hold the hat securely in motion without requiring mid-run adjustments, and moisture-wicking side panels move sweat away from your face during tempo runs and longer road efforts.The streamlined design avoids bulk, so it layers cleanly under a hood or sits flat on its own. A reflective silver logo on the front delivers added visibility during low-light running - useful for pre-dawn or post-sunset sessions. The combination of ventilation, wicking fabric, and secure closure makes this hat a practical choice for runners who want reliable headwear across a range of training conditions.Why Our Fit Experts Love It""I grabbed the Endorphin 5 Panel Hat 2.0 for a humid early morning run and it stayed put the entire time. The laser-cut ventilation made a noticeable difference, and I didn't have to touch the closure once I set it."" - Michael, Road Runner Sports Fit Expert, Seattle WAWho It's Best ForThe RRS® Endorphin 5 Panel Hat 2.0 is best for runners and athletes who want a lightweight, all-season hat for daily training, road running, tempo runs, and low-light workouts. It suits anyone who needs reliable sweat management and a secure fit without added weight or bulk. VIP Family members can take the Endorphin 5 Panel Hat 2.0 for a 90-Day test drive with our Perfect Fit Guarantee."