"Finally something that works. I'm falling asleep within 20 minutes instead of lying awake for an hour. The amber lenses look better than I expected."
James T. · Software Engineer
Free Worldwide Shipping · 30-Day Sleep Guarantee · Ships in 48 Hours
The KRONVEIL X0-1
Glasses you'd wear even without the science.
99% blue + green light filtered. 400–520nm. The full spectrum that actually disrupts sleep.
★★★★★ 4.7 · 321 reviews
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The Problem
By 3pm, your screen has already suppressed your melatonin.
2–3 hrs
Average time it takes for melatonin to recover after evening screen use.
400–520nm
The light range most glasses ignore — and the one your circadian system responds to most.
~15%
How much blue light most "blue light glasses" actually filter.
The Solution
The only glasses designed around the full 400–520nm spectrum.
Blue light glasses typically filter light between 400–450nm. But your brain also responds to green light (450–520nm). Both suppress melatonin. The X0-1 blocks 99% of it — all of it.
Filtered Light Spectrum · 400–520nm
KRONVEIL X0-199% blocked
Typical blue-light glasses~15% blocked
400nm450nm520nm700nm
KRONVEIL X0-1 · BIO-SYNC™
Protection. Precision. Restraint.
- —99% Blue + Green Light Filtered
- —CR-39 Optical Polymer Lens
- —Mazzucchelli Acetate Frame
- —17g · Unisex · One Size
$99.00 USDSave $99
In stock · Only 84 sets left in this batch
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Built around your evenings.
4.7 out of 5321 verified reviews
"I didn't realise how wired I actually was at night. It took me around 2 hours to fall asleep."
Mei · Creative Director
"The science is real. Wore them for a week on a long-haul and my sleep quality on the plane was genuinely different."
Ravi K. · Consultant
30 Days. No Questions.
Try the X0-1 for a full month. If you don't sleep better, return them for a complete refund. No forms, no conditions, no hassle.
Secure Yours — $99Built around your evenings.
Restocks, new frames, and the occasional note on circadian research. No noise.
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