Here smaller frames provide a better fit for feminine faces. Layered face foam seals heat in for warmth and comfort. And frames remain flexible in the coldest temperatures. More feminine styles dominate. So each goggle stands out from the rest. Lenses are specially shaped to give a wider perspective-- and better views downwards (without distortion).
End fog ups with vented lenses. They allow air to flow over lenses to blast moisture away. Plus lenses are armed with anti-fog coating. Stopping water from collecting on them. Double lenses form a barrier between the cold outside and warmer air inside. So they don't meet. And fogging doesn't happen.