Built for speed, endurance, and all-day comfort, the Coolibar 5K Ultralight Runner is the ultimate high-performance hat designed for athletes and outdoor enthusiasts alike. Crafted from 100% recycled polyester, this ultralight cap delivers eco-friendly innovation without compromising on performance. Designed with stitchless seams for a smooth, irritation-free fit. The 6-panel construction offers a modern, streamlined silhouette, while the adjustable drawcord ensures a secure, customized fit—perfect for running, hiking, or just tackling the day in style.