Peter Clinch wrote:


I use wraparound lightweights, a bit like those fit folk you can
currently see doing the rounds at the Olympics. They only seem to fog
up if I blow upwards.

One of the sprinters in todays Sprints at the Olys got stabbed in the chest by a pole of the guy in front when they were both in downhill tuck, it could have caught his face.
There was a call some time ago for stronger lenses to be put into sports glasses to protect the eyes of the following skier in an incident like the above.
Its something to consider when forest skiing. Branches extending across the trail can get snapped off by harvesting vehicles leaving a sharp point behind.