The lenses definitley work. I have spent a good 12 years trying to fix my sleep - i don't drink any caffeine, wore amber glasses, no phone or tv from 8pm onwards, meditation, pink noise machine, sleep mask, own the comfiest mattress and supportive pillow in the world! etc etc etc. But getting these really did make an improvement and I finally feel I sleep well. Dan has done us all a massive, massive favour in designing these lenses. Thank you. Wearing these I get sleepy quickly, sleep for longer, wake less, seem to sleep more deeply and dream more. Also I can exercise again and not wake with muscle aching.

The one downside with these frames is that because they are round more light gets in around the sides than otehr designs. That said I still feel significant benefits over my old, square amber glasses that I bought years ago elsewhere. Also I suspect black frames would look better with the red lenses than the tortoiseshell