LIGHT AND STRETCHY. The Nike AeroBill Visor keeps you covered with lightweight, breathable fabric. With stretchy fabric and an adjustable back strap, it lets you find your fit for the miles ahead. Benefits Nike Aerobill technology integrates proprietary lightweight construction with breathable, sweat-wicking fabric for enhanced comfort and reduced distraction. Stretchy fabric feels soft against your skin. An adjustable back strap lets you customize the fit. Product Details Reflective elements Not intended for use as Personal Protective Equipment (PPE) Body: 100% polyester. Underbill/sweatband: 79% polyester/21% spandex. Hand wash Imported Style: DD8392; Color: Black; Gender: Female; Age Group: Adult