
MEET THE MASK THAT SEALS BOTH LEAKS
Most sleep masks can only block 85% of outside light. And none of them can close both spots where light and sound get in: the gap at your eyelid, and the gap at your ear.
REM Seal closes both, at once. No charging routine. No Bluetooth ritual.
THE SCIENCE
56% Less Melatonin Even While Your Eyes Are Closed
56% Less Melatonin Even While Your Eyes Are Closed
A peer-reviewed 2012 study found that light delivered directly to closed eyelids suppressed melatonin by up to 56%, with the effect strongest during REM sleep. Your eyelids don't fully block light, and that's what most masks were never built to close.
Your Brain Never Stops Listening
Your Brain Never Stops Listening
A 2012 study found sudden sounds trigger brain arousal during sleep, even without waking you. Steady sounds, however, mask those spikes before they ever reach you.
Resources
Resources
- Figueiro, M.G., & Rea, M.S. "Preliminary Evidence That Light Through the Eyelids Can Suppress Melatonin and Phase Shift Dim Light Melatonin Onset." BMC Research Notes, 2012, Vol. 5, p. 221. DOI: 10.1186/1756-0500-5-221
- Buxton, O.M., Ellenbogen, J.M., Wang, W., et al. "Sleep Disruption Due to Hospital Noises: A Prospective Evaluation." Annals of Internal Medicine, 2012, Vol. 157, No. 3, pp. 170–179.
- Messineo, L., Taranto-Montemurro, L., Sands, S.A., Oliveira Marques, M.D., Azabarzin, A., & Wellman, D.A. "Broadband Sound Administration Improves Sleep Onset Latency in Healthy Subjects in a Model of Transient Insomnia." Frontiers in
WHY REMLOCK VS. A GENERIC MASK
|   | Us | Others |
|---|---|---|
Seals Nose Gap |
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Addresses Sound |
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App Required |
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Score to Manage |
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Science-backed |
Hear From REM-Maximizers
Frequently Raised Concerns
Why does this mask have sound if sound can mess up REM?
Why does this mask have sound if sound can mess up REM?
You are correct to ask this. REM is especially sensitive to sound. However, it is shown in research that REM is disturbed by sudden noises, and a constant frequency or type of music will typically shield your brain from sudden noises.
Do I need to charge or pair anything before bed?
Do I need to charge or pair anything before bed?
It is recommended to charge your mask every morning, so it is ready for use at night. This is just so you don't run the risk of the mask dying in the middle of the night.
Pairing your phone to the mask is recommended, but not required.
Will the audio hardware bother me if I sleep on my side?
Will the audio hardware bother me if I sleep on my side?
This was a complaint we saw appear time and time again. Seeing those complaints, we decided to really put effort into padding the areas near the hardware while still keeping it audible.
How is this different from a $13–$40 blackout mask?
How is this different from a $13–$40 blackout mask?
Most masks in that range block the room but not the eyelid-level gap, especially at the nose bridge — the point reviewers across the category report light leaking through most. REM Seal is built specifically to close that gap, along with the sound gap most masks don't address at all.
What's your return policy?
What's your return policy?
60 Day Money Back Guarantee. No questions asked.
Is the science real?
Is the science real?
Yes, here are part of the resources we used in the development of this product:
Figueiro, M.G., & Rea, M.S. "Preliminary Evidence That Light Through the Eyelids Can Suppress Melatonin and Phase Shift Dim Light Melatonin Onset." BMC Research Notes, 2012, Vol. 5, p. 221. DOI: 10.1186/1756-0500-5-221
Buxton, O.M., Ellenbogen, J.M., Wang, W., et al. "Sleep Disruption Due to Hospital Noises: A Prospective Evaluation." Annals of Internal Medicine, 2012, Vol. 157, No. 3, pp. 170–179.
Messineo, L., Taranto-Montemurro, L., Sands, S.A., Oliveira Marques, M.D., Azabarzin, A., & Wellman, D.A. "Broadband Sound Administration Improves Sleep Onset Latency in Healthy Subjects in a Model of Transient Insomnia." Frontiers in