One pair for bright sun and deep shade. The Flash's photochromic lenses go from clear to tinted as the light changes, so the dock at dawn and open water at noon both look right.Semi-wrap performance frame. Photochromic lenses, fully UV protected. Comes with a custom box, hard case, lens cloth, and microfiber pouch. Black, Blue and Yellow, or White.Designed by BOLD in Steamboat Springs, Colorado, and ride-tested in the Rockies. Ships direct from our partner BOLD, with free 30-day returns.