Callaway Diablo Series Warbird Sunglasses : NX14 Black Lens: Neox NX14 2nd generation high performance Neox formula Enhanced distance vision Superior depth perception Frame: On or Off Course Classic Style Lightweight TR90 Grilamid construction Versatile 3 piece styling Wrapped lens shape for maximum coverage Fit: Med-Large Head Shape Secure ergonomic wrap, Megol rubber nose pads and eartips provide secure non-slip fit Slightly darker Blue Grey, 14% light transmission