I got the Radar Advancers in the half price sale PSA’d on here a few months back – really like them – the ‘advancer’ thing means they have a little adjustment on the nose piece, you click it forward and it pushes the frame a few mm forward off your brow. It really does help, I’m a sweaty rider and this stops them fogging up really nicely.
I dont use them on my MTB yet, I’m waiting till theres a cheap knock-off clear lense available, I only use cheap clear ones for MTB and save the fancy polarised Prizm road lense for where it stays clean. I’d cry if I scraped a dollop of mud of it and ruined it.
They fit under my helmet well too.