A nod to slate and its color undertones, this attractive blue/gray gradient lens is excellent for every day wear as your classic gray lens sunglasses.Technology:SkyForce Air™ Gradient Lite Lens, Vector™ Anti-Reflective backside coating, Blue Wave™ HEV Blue Light Management, 100% UVA and UVB.Style: HawkSize: 57 mmFrame Finish: Dark RutheniumTemple: SkullLens: SkyForce Air SlatePolarized: No