PRODUCT DETAILS | Running cap to protect you from the sun when running in hot sunny weather over any distance (training / racing). | Compact Design: Store your cap in an instant thanks to its flexible and compressible material. | Lightweight: Ultra-lightweight, it weighs only 20 g or 39 g with the removable neck panel. | Modularity: Protect your neck from the sun: the neck panel is detachable with a rip-tab. | Moisture Management: Fabric wicks moisture away, providing optimal ventilation. | Quick Drying: The cap dries quickly thanks to the lightweight, breathable fabric. | Anatomic Design: The large rip-tab at the back allows you to adjust the size, from 54 to 61 cm.