OAKLEY LATCH SUNGLASSESA fresh path from the trailblazers of style, this design inspired by influential athletes is shaped with a classic keyhole bridge and the curves of rounded lens orbitals, and w e engineered it with the convenience of an interior kick-up feature that lets you clip it to your shirt.FEATURESLightweight O Matter(TM) frame material with Square O metal icon accentsClip hinge mechanism that enables the eyewear to latch onto your t-shirt to secure eyewear4 base lens geometry with HDO(TM)Available with Prizm(TM) lenses to enhance color, contrast and detail for an optimized experiencePolarized and Iridium(TM) lens options availableAvailable with Oakley Authentic Prescription Lenses: Power range +2.00 to -4.00TECH SPECSOffering top UV protection, these lenses filter 100% of all UVA, UVA, UVC and harmful blue light up to 400nm.