http://www.specsavers.co.uk/glasses/puma-sun-rx-05?sku=25672329
They are a wrap around style with Rx insert, mirror dark tint, orange blue blocker, and clear lenses.
I made up a pair last week, great on the road bike, fine for 40mph downs, with no eye watering, or vibrations.
Then used the orange lens in Cwmcarn, perfect to increase the contrast in under cover low light woods and trails. Had a few (slow) offs, on the technical climbs, but the specs stayed on.
The insert sits quite flush to the outer lens so they don’t sit too far out, and the insert isn’t the usual 10p size round eye, but a tapered rectangle shape, so gives a much better field of vision.
Really pleased with them, just wish the dark lens was a brown tint instead of grey.