Made from a lightweight, quick-drying polyester fabric, the revised five-panel design wraps around the head for maximum protection and a secure fit. Laser-cut holes at the side of the cap allow hot air to vent away from the head so you can concentrate on your pacing without overheating. A simple drawstring closure at the rear adjusts with a single pull for the perfect fit every time. A new elliptical peak has been designed for on-run performance - keeping out both the sun and the rain.