Ray-Ban - Tech RB8301 sunglasses are all about innovation and use of new materials. This Ray-Ban Tech segment highlights the use of carbon fiber. Carbon fiber and a resin composite creates a lightweight, strong, flexible, and resilient material. The Ray-Ban monel Aviator? inspired sunglasses have a smaller rounded eye shape and is paired with slim elongated carbon fiber temples. Rubber temple tips for added comfort and non-slip grip. This model comes with crystal lenses and is available in a polarized lens option with an anti-reflective and hydro-oleophobic coating.