These are interesting sunglasses - I was thinking that they would be for low light conditions and it turns out they are fine in bright sunshine and do a great job in low light conditions.  They are not as good as an Amber colored lens in the low light but they are way better than a darker lens.

The frames are super light and they grip very well.  The lenses sit a touch high for me, but that works well to allow me to see under the lens to see my GPS unit on my bike.