uncompromised clarity for razor sharp focus - oakley latch matte brown tortoise. the oakley latchâ„¢ sunglasses are designed with inspiration from the skate scene. they come equipped with an integrated clip mechanism that can be attached to your t-shirt and a secure three-point fit that makes them perfect for long skate sessions. the frame is made of lightweight yet incredibly durable o matterâ„¢ material, providing a comfortable fit. additionally, the sunglasses feature shatterproof plutonite® lenses with high-quality prizmâ„¢ technology.prizmâ„¢prizmâ„¢ is a revolution in lens optics built on intensive colour science research. prizm â„¢ lenses maximize contrast and increase the visibility of objects.