Basic tech running cap with sun protection and efficient sweat absorption. Don't fear the dark: reflective to be seen at night! Flexible fitting: stretchable for auto adjustment Run in style! Protection is vital when running in the sun or in cold weather. Our line of running caps, visors, headbands and tubulars has been specifically designed to provide protection and fresh looking style. Designed to improve visibility in low-light conditions. Retro-reflective tech to glow when receiving light.