ecause sun and sweat can feel just as challenging as the miles ahead, this adidas running hat has perforations to keep air circulating. A pre-curved brim keeps the rays out of your eyes, while CLIMACOOL wicks and disperses sweat for cool, dry and distraction-free performance. CLIMACOOL helps you manage sweat with materials that wick and manage sweat quickly. Its fast-dry fibres give you a fresh-skin feel.