Question 1

I am confused. What do you need in the end yellow or red lenses?

Accepted Answer

Choose your lenses based on the time of day and your lifestyle needs. Yellow lenses are appropriate for daytime use as they block up to 75% of blue light. These are referred to as TrueDark Daylights, and they are ideal for individuals who are exposed to blue light-emitting devices (TVs, computers, tablets, phones, etc) for extended periods of time. At night, use TrueDark Twilights, which have distinct red lenses that block up to 100% of blue, green, and violet light.  Doing so signals to your brain that it's dark outside, which helps your body produce melatonin naturally so that you can fall and stay asleep. Lens color is key because it determines which wavelengths and how much junk light you're blocking.

- Pharmapacks, an authorized seller of TrueDark

Question 2

Hello, I wonder is the foam padding can occasionally be removed safely then put back again houres later?

Accepted Answer

Yes, it is possible to remove the foam liner. To do so, you'll need to unscrew the two screws on the underside of the frame, and unclip the liner at the bridge of the nose. You can put it back in by putting the two tabs in at the base of each arm hinge, and re-clipping it back on at the bridge of the nose. Do not peel off the foam from the plastic liner it's attached to, though, it's not meant to be detached that way. Thanks!

Question 3

Do these work better than the elite model? Because they are the only ones offered in the pack deal. Also is there a pack with both in the elite style?

Accepted Answer

Hi,

These and Twilight Elites (which aren't on Amazon yet but we're working on that!) are both nearly identical in functionality, as both use the same patented multi-layer filters to block out all that light! It's mostly down to preference. These have a bit of a superhero look to them and do block out a tinge more light on the top and sides, and the Twilight Elites have a sleeker look and are great for folks who find the classic Twilights to not be their style. We're working on adding new pack deals soon, so stay tuned!

Question 4

What specific nm spectrum do these block out?

Accepted Answer

It covers most of the colors that disrupt the circadian rhythm within the visible spectrum, which is generally indigo, blue and green, ranging from 445-550 non (though I believe indigo is lower than that). I believe these glasses cover even higher in the range of visible color lighting, up to red (635 nm). To confirm this, I would reach out to the Truedark team directly to confirm. I’ve reached out to them, and they’ve been very helpful.

Frame Material	polycarbonate frame with flexible TR90 arms
Lens Material	Polycarbonate
Item Weight	8.46 Ounces
Number of Items	1
Size	1 Count (Pack of 1)
Item Package Quantity	1
Item Shape	Rectangular
Color	Green
Style	Classic
Lens Color	Red
Frame Type	wrap-around frames
Lens Coating	Anti-Fog Coating
Special Features	UV Protection, Lightweight, Scratch-Resistant

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TrueDark Twilights Classic Blue Light Blocking Glasses - Reduce Eye Strain and UV Glare for Better Sleep - Men & Women - Computer Screen, Gaming, TV, Phone - by Dave Asprey

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