The Nesa combines a traditional lens change system with Perceive optics and a modern look and feel.The Anon Nesa Goggles combine a sleek, modern profile with a wide field of view and the clarity of Perceive lens technology. A cylindrical lens and semi-frameless design maximize the field of view, while Perceive lens technology enhances contrast for the best possible definition and terrain recognition. They feature our exclusive magnetic face mask integration (MFI®) for seamless coverage from snow, wind, and sun when used with our compatible hoods and face masks. They are over the glass compatible for wearing with eyeglasses and include two Perceive lenses, a mesh MFI face mask, plus a microfiber bag for storage and lens cleaning.