Your brain was built for firelight. Not for screens.

For 300,000 years, the sunset told your body when to sleep. The light bulb is less than 150 years old. These glasses bring the sunset back.

Try them for 30 nights. Not falling asleep faster? Full refund.

A short history of the night

300,000 years of darkness. 150 years of light.

Your body clock was shaped by the sun. Then, in the blink of an eye, we lit up the night.

300,000 years ago
Sunrise, sunset and firelight.
For almost all of human history, the sun set our schedule. After dark there was only firelight: dim, warm, and almost free of blue light.
1879
Edison's light bulb.
For the first time, night could look like day. In evolutionary terms, that was a moment ago.
1990s
The screen moves in.
Computers and TVs fill our evenings with bright, blue-rich light, right up to bedtime.
2007
A light bulb in your pocket.
The smartphone puts a bright screen inches from your eyes, and into bed with you.
Today
Brighter screens. Smarter apps.
High-resolution screens, and apps built by some of the brightest minds in the world to keep you scrolling and your emotions running high.

Your brain still runs on that ancient schedule. A bright screen at 11pm tells it the sun hasn't set.

Why you can't switch off

It's not just your mind racing. It's the light.

Woman wearing 8Hours blue blocking glasses against an orange background

Light is the main signal for your body clock.Blue and green light after dark holds back melatonin, the hormone that tells your body it's time to sleep.
Screens are full of it.In a Harvard sleep lab study, reading on an iPad before bed delayed melatonin and meant taking about 10 minutes longer to fall asleep than reading a printed book.
You feel it the next morning.The same people were less alert the morning after, even after a full eight hours in bed.

You don't have to give up your screens. You have to filter them.

How to use them

One habit. Every evening.

1–2 hours before bedGlasses on.The lenses filter 99%+ of blue and green light, the wavelengths (roughly 400–550nm) that hold back melatonin.
The rest of your eveningCarry on as normal.Scroll, work, watch TV. The frames are big enough to wear over prescription glasses.
Lights outGlasses off. Sleep.Your body clock has had the dark signal it was waiting for.

The evidence

Small change. Measurable difference.

~30 min more sleep a night with amber lenses before bed
~10 min longer to fall asleep after reading on a screen

~30 min: Shechter et al. 2018 (Columbia University), 14 adults with insomnia wearing amber lenses for 2 hours before bed for 7 nights, compared with clear lenses. ~10 min: Chang et al. 2015 (Brigham and Women's Hospital, Harvard), 12 adults reading on an iPad vs a printed book. Small studies; results vary from person to person.

★★★★★
My HRV has gone from late 40s to late 60s
Put on 1-2hrs before bed and the last week I have noticed a deeper urge to go to sleep and faster to actually fall asleep. Whoop is showing better sleep scores which are more consistant and dont bounce around as much.

Andrew · Verified buyer
★★★★★
Great for those late work nights
They do really really work. Noticeable diference for me in falling asleep after working with these on. Good build and the frames are big enough to wear over prescription glasses.

Bart Weskant · Customer review
★★★★★
Seriously excellent
I bought another brand that was 2.5x this price and they were equal. Equal design, equal impact.

Nicola · Customer review
Blue light in the evening is one of the most underestimated sleep disruptors. Red lenses block the spectrum that suppresses melatonin - the simplest circadian fix most people are not making.

Dr Tom Gurney · Chief Science Officer, 8Hours

Phones out. Glasses on.

Pssstttt....

The glasses come free with the 3-month sleep bundle.

Light is one of three things that cut deep sleep short. The bundle covers all three: three months of Sleep & Recovery for a calmer mind, plus the blue blockers, earplugs and more, free in the box.