The Oakley Half Jacket 2.0 Sunglasses focus on versatility so you can stay one step ahead of changing light conditions. The Half Jacket 2.0 wraps your vision in High Definition Optics (HDO) so you're set for all-day wear. The frame still features the lightweight O Matter with Unobtainium earsocks and grip anchors. The open-edge design extends your vertical field of vision, and each set of optional lenses retains the peripheral clarity of XYZ Optics. That's just one of the patented innovations that give HDO its unbeatable performance. Impact protection meets ANSI Z87.1 standards, and the lens material filters out 100% of UVA/UVB/UVC and blue light up to 400nm.