I have more pairs of bike glasses than I’d care to admit… I’ve ran the gamut. I wasn’t sure how these would be different, but took a shot when I saw them featured on MTB Yum Yum. Just as advertised, they stay put after adjustment where other more expensive headliner brands just promise. I tend to ride some pretty gnarly DH tracks and skidders with drops, and these things do not move - they are my new favorites and won’t be my last pair. I highly recommend taking a shot on these, they will be the ones you keep going back to.