Inspired by the world of skateboarding, Oakley’s Latch Matte Black sunglasses feature a classic keyhole bridge and rounded lens contours. Oakley designed a convenient built-in clip mechanism so you can easily attach this beautiful piece to your shirt. Prizm™ lenses Prizm™ is a revolution in lens optics built on decades of colour science research. Prizm ™ lenses offer unprecedented control over light transmission, allowing colours to be fine-tuned to maximize contrast and improve visibility. FeaturesFrame in lightweight O Matter™ material with legendary Square O metal logo detailsClip mechanism for secure attachment of the glasses to the T-shirtCurved lens (base curve 4) with HDO®Suitable for prescription lenses: Diopter range +2.00 to -4.00Light transmission: 13 %Light conditions: Bright lightContrast: IncreasedBasis Lens Colour: Bronze