Here's what other sites are saying:
The chic and sleek Duchess is packed with technology to keep you fog free and enhance your vision all day long.
The new Bolle Women's Duchess Goggle offers a wider field of vision characteristic of spherical lenses while being sized to fit smaller faces. In addition to this, the goggle has a number of features that enhance vision and comfort while protecting the eyes from harmful rays and tear-inducing wind. The goggles offer 100% UV protection, and the Vermilion and Aurora lens tint options increase contrast to provide excellent optical clarity in conditions that range from cloudy to sunny. The goggles' double lens construction, Anti-Fog coating on the inner lens, and Flow-Tech vents on the frame all work together to control airflow, temperature, and condensation to prevent fogging, while the Equilizer Vent in the lens stabilizes pressure between the front and back lens to prevent optical distortion and fogging at varying altitudes. Triple-layer, multi-density face foam is firm yet cushy, and along with the soft, moisture-wicking micro-fleece backing, provides long-wearing comfort as well as creates a secure seal that keeps wind and cold temperatures out. The silicon strap provides excellent grip to keep the strap securely on the helmet, and the Forestay system (swinging outriggers on the goggles' edges) enables the strap to move independently of the goggles for seamless helmet integration. The fun, nature-inspired print on the straps, unique vent detailing, and flattering goggle shape all add feminine flair. Bolle's Sports Optical System (S. O. S.) adapter (sold separately) can be fit inside the frame if you prefer to make the goggles prescription-compatible.