FreeMascot OD 4+ 190nm-540nm Wavelength Laser Safety Glasses for Typical 405nm, 450nm, 520nm, 532nm Laser Light for Hair Removal Laser Treatment Eye Protection Goggles (Red)

These safety glasses are excellent, they provide great wrap-around coverage which is something I find lacking in many inexpensive pairs. They're quite large, they fit my enormous head comfortably even over my prescription glasses which I was really not expecting - they're so large they can even fit over some of my old laser safety glasses. I wish I could verify their claims about optical density, but I can say is these do thoroughly block the scatter from my 455nm blue laser engraver, just about any source of clean blue light disappears with these on. Very happy with these, a welcome upgrade over others I've tried in this price range.

So my body's schedule is perfectly fine when I am backpacking and outside 24 hours a day in beautiful summer weather. However, if it's an overcast day, my delay is 2-3 hours, for a 26-27 hour cycle. If I'm sleeping in a room without a real direct-light window, my delay is 5 hours, for a 29 hour cycle. I have had narcolepsy and a severely delayed circadian rhythm my entire life if my light exposure is not completely synced to the equivalent of full outdoor sun. People without this problem will make suggestions like "just go for a 15 minute walk outside every morning". No, I literally need continuous full outdoor sun THE ENTIRE DAY in order to not fall asleep midday. As you can imagine, this is very bad for work. I thought my night light exposure was fine because I have already switched over all my bedroom lights to dim orange/amber lights and have blue filters on my computer and phone, but it turns out that these red goggles do even better. They filter ambient street light, fridge lights, not-so-orange common space lights, and other random lights I might accidentally see walking around the house in the evening that I don't think about. These red goggles solved half of my problem. When I start wearing them 2+ hours before my target bedtime, I actually feel sleepy by my target bedtime, even if it's before midnight. Game changer and much better filtering and wraparound than standard blue-blocker glasses for only $10! Pure blue lights are completely invisible through these glasses, it looks like nothing is on. For the other half of the problem -- simulating full sunlight on days when it's either overcast, or I need to work indoors -- I read OptimizeYourBiology sun lamp reviews and ended up buying the Luminette 3 (~$200) and Alaska Northern Lights Mini Pad (~$200). I balked at the prices at first, but they have proven to be a very good deal considering they are giving me back several hours a day every day that I would usually spend struggling with my severe sleep disorder. I can finally cosplay as a normal person, at least where being awake is concerned. FYI, you'll get much better customer service if you buy directly through their websites rather than through Amazon.

Does what it needed to do, build quality has survived some drops

Weight is negligible; Fit is fine for those without glasses, but over-glasses fit leaves gaps around peripheral vision that let in unfiltered light; Visual clarity isn't hindered in any noticeable way.

Love em. I use these for dark therapy; if i wear them for a while before going to bed, it theoretically should block blue light which inhibits melatonin production. My experience is non scientific and I won't rule out placebo effect, but it seems to work.

Blue blocking is really good on these but it doesn't fully cover full peripheral vision like uvex. It gets uncomfortable on my nose and it clamps on my head pretty badly. the dimensions of the product are listed which is a plus. It's not bad for the $ and I think the red is far superior to the orange ones.

Great fit, if you want to see the world in a way that is unique. Wear this. From 3 to 5 pm. Otherwise the night turns into Tron City.

I got these to compare with the $60 version made by Safety Blue and they hold up as a direct replacement so I have both. Minimizing night time after hours blue light from indoor lighting and devices and TV screens consistently over time reduces a great deal of stress on the eyes and brain after decades of no precautions, these are perfect for fitting over ordinary corrective lens frames. Huge value compared to the alternative, comfortable to wear for long hours.

These glasses really block a lot of blue light and a small portion of the rest of the spectrum. Decent build quality and very good coverage of the face. These make excellent night time blue blockers and are priced reasonably.

Works great. Easy to use and fits right over your own glasses if you wear glasses.

Nice and perfect product, I recommend it

I have chronic insomnia and wearing red lensed glasses + being mindful of my carcadian rhythm has been the most beneficial change I’ve made! And I’ve tried a lot. These glasses are darker than my last pair which I like, but not comfortable to lay down while wearing.

Glasses are a good fit and work as intended. Could be less uncomfortable but it is not too bad. Comfort may be an issue for long term use. Came with a case and cloth for cleaning. Both items reek of a strong chemical smell. After washing and airing the cloth the smell has lessened but is still there. The smell on the case is still as strong as the day the package arrived. I will have to throw out the case and cloth, but the glasses are fine.