★★★★★4.7 · 321 reviews

Kronveil X0-1 · Unisex

$99.00 USD

  • —Blocks 99% of blue and green light
  • —Fall asleep faster
  • —Prevents migraines and headaches
  • —One size fits all
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Why Most Blue Light Glasses Fail You

They block the wrong light.

Most blue light glasses only filter a small portion of blue light and ignore green light entirely, but both blue and green light (400–520 nm) disrupt sleep and throw off your circadian rhythm. That's why cheap blue light glasses leave you wired at bedtime, groggy in the morning, and still dealing with eye strain. The KRONVEIL™ x0-1 blocks the full 400–520 nm spectrum — the exact range that suppresses melatonin and keeps your brain switched on when it should be winding down.

Better Sleep
Blocks the light that tells your brain to stay awake. Wear them 2 hours before bed and your body can actually wind down.
Wind-Down Trigger
Putting them on becomes the moment your nervous system clocks out. The day ends when you decide it does — not when the screens do.
Fewer Headaches
Evening migraines start with high-energy light hitting your eyes after dark. The X0-1 takes that load off before it builds.
Deeper Recovery
Protected melatonin means deeper sleep stages. Your body fixes the things it's supposed to fix overnight, without you doing more work.

Blue + Green Light Filtration — 400–520nm

X0-1
99%
1%
Typical
~15%
380nm400460520600700nm

With X0-1 Lens Protection

99% Blocked 400–520nm Range
395nm450500550600650715nm
X0-1 Spectral ResponseKronveil Optics Lab — independently lab-tested
Frame and Sizing Guide
Total width140 mm
Lens width50 mm
Bridge20 mm
Temple arm145 mm
Lens height42 mm
Weight17 g

One size, designed to suit most adult faces. The X0-1 ships in a single unisex size — the dimensions above are tuned to fit comfortably across a wide range of head shapes and widths.

Not sure? Try them risk-free for 30 days. If the fit isn't right, send them back for a full refund.

ProcessingEvery order is packed and dispatched within 48 hours of purchase.
DeliveryShipped worldwide via air. Typically arrives in 8–10 days depending on location.
Returns30-day return window. Items must be unworn and in original packaging, with proof of purchase. Refund issued within 10 business days of approval. Full policy →

30-Day Guarantee

We love the KRONVEIL™ X0-1 and we're confident you will too. That's why every pair comes backed by our 30-Day Guarantee — if you're not satisfied, get in touch and we'll review your case and see how we can help.

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Customer wearing Kronveil glasses after hours

After Hours

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Travelling

Customer wearing Kronveil glasses at home

At Home

Frequently Asked Questions

The KRONVEIL™ x0-1 goes beyond standard blue light filtering. Our lenses are engineered to filter out blue light along with most of the disruptive green light in the short wavelength spectrum, giving you a deeper level of protection than typical blue light glasses. We also use premium optics with advanced anti-scratch, anti-reflective, and hydrophobic coatings for everyday durability and crystal clear vision.
The blue and green light we filter out sits in the shorter wavelength range of the visible color spectrum (around 400 to 520 nm). To block those wavelengths effectively, the lens itself has to come from the opposite side of the spectrum. That's why our lenses carry a red tint. It isn't a style choice. It's the science of how filtering actually works.
The KRONVEIL™ x0-1 is designed for evening and nighttime use, when exposure to screens, overhead lights, and other artificial lighting is most disruptive to your sleep. We don't recommend wearing them during the day. Natural exposure to blue and green light in daylight hours actually helps regulate your circadian rhythm and keeps you alert. The goal is to block that light only when it works against you.
Artificial blue and green light raises cortisol, your body's stress hormone, and suppresses melatonin, the hormone responsible for telling your body it's time to wind down. By filtering out that disruptive light in the evening, the KRONVEIL™ x0-1 helps your body transition into rest naturally, so you fall asleep faster and sleep deeper.
Under normal lighting, the KRONVEIL™ x0-1 filters 99% of light across the full 400–520 nm range — the entire short-wavelength band that suppresses melatonin, covering both the disruptive blue spectrum and the short-wavelength green light most other glasses ignore.
No. The KRONVEIL™ x0-1 is not designed for driving or operating machinery of any kind. Save them for your wind down hours.

Reviews (321)

4.7
★★★★★
321 reviews

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