This was for those that have to prescription specs to see where they are going @ 160k's plus.
Hey Biggles, I only ride as fast as my Guardian Angel can fly!!!!
I use 'em on my sun visor inside the Evoline 3 and they work a treat.......http://www.ioptix.co.uk/product/diving-masks/diveoptx2020-stick-on-reading-lensesPJ