Purpose Built Optics feature lens technology designed to highlight key pursuit details, not just block light. We start with the lens and build from there, because when it's time to make the cast or take the shot, hitting your mark begins with having the right tool to see it.Purpose Built Optics feature lens technology designed to highlight key pursuit details, not just block light. We start with the lens and build from there, because when it's time to make the cast or take the shot, hitting your mark begins with having the right tool to see it.Purpose Built Optics feature lens technology designed to highlight key pursuit details, not just block light. We start with the lens and build from there, because when it's time to make the cast or take the shot, hitting your mark begins with having the right tool to see it.