I normally use the Venom safety specs variously branded as Honeywell / Sperian / Pulsafe. But have found that I can still get a bit of mud past them, so decided to try a couple of other options.
Ordered some Bolle Spiders based on recommendations here and also some JSP Martcare M9700 Sport. Arrived this morning from Seton (links below).
Both the Spiders and the M9700 wrap around well and sit closer to my face than the Venoms and should reduce the chances of mud getting through. Neither feel quite as secure on my small head as the Venoms, more so with the Spiders, will see how that goes in practice. Also think the lenses are a little better on the M9700’s.
With both the Venom and the Spiders when folded the ends of the arms can rub and scratch the inside of the lens, this doesn’t appear to be an issue with the M9700’s.
At £5.70 a pair I might have found my new favourite riding glasses.
Venom
http://www.seton.co.uk/honeywell-venom-safety-glasses.html
Spider
http://www.seton.co.uk/bolle-spider-specs.html
M9700
http://www.seton.co.uk/jsp-martcare-m9700-sport-safety-glasses.html