Sleep Mask

Regular price: $25.00
Regular price
Sale price: $25.00

Shipping calculated at checkout.

Moongreens Sleep Mask

Most sleep masks either let light in or press against your eyes all night. This one does neither.

A contoured shell keeps the fabric off your eyelids, so you get real darkness without the flat-mask crush. You can still blink and move without waking up with a crease down your cheek or your lashes pressed flat.

It's lightweight, breathable, and built to survive a carry-on, not just sit in a nightstand drawer. Comes in navy with black trim, an adjustable strap for a fit that stays put, and its own carry bag so it isn't loose at the bottom of your luggage.

Contoured shell, no contact with your eyelids
Adjustable strap, stays put all night
Breathable fabric, built for travel
Includes a carry bag

Included free with your first subscription order, or available on its own.

What's in the box

1 × Moongreens Sleep Mask

Wipe clean with a damp cloth or hand wash in cold water. Air dry flat. Do not machine wash or tumble dry; it'll distort the contoured shell.

FREE Shipping

Free shipping on every order. Ships from our US fulfillment center. You'll get a tracking email once it's on its way.

Free With Every Moongreens Subscription

Sleep in actual darkness.

Most bedrooms aren't dark. They're 10–50 lux. Your brain notices every photon. This mask fixes that.

Start your subscription

Included free with any Moongreens subscription — or buy standalone for $29

83% fall asleep faster in total dark

0 lux total blackout — measured

58% more deep sleep reported

$0 with any subscription

Moongreens sleep mask — velcro strap detail

The problem with your bedroom

Light is information. Your brain never stops reading it.

Even with the lights off, the average bedroom sits at 10–50 lux — standby LEDs, streetlights through curtains, a charging phone face-up. That's enough for your suprachiasmatic nucleus to suppress melatonin production and keep you in lighter sleep stages.

The threshold is lower than people think. Exposure to as little as 3 lux during sleep measurably shifts your circadian timing. Dim isn't dark. Dark is dark.

A properly sealed sleep mask is the single cheapest intervention that works. The research on light-blocking and sleep quality is unambiguous. We tested over 100 masks to find the one that didn't cause a different problem.

What the research says

Sleeping in total dark isn't aesthetic. It's physiology.

Melatonin onset

Melatonin production typically begins 90–120 minutes before your natural sleep time — but only when your eyes aren't registering ambient light. Even low-level photon exposure shifts the onset window and delays sleep pressure.

Deep sleep architecture

Studies using polysomnography show subjects sleeping in total darkness spend significantly more time in N3 slow-wave sleep — the stage where physical repair, immune function, and memory consolidation actually happen.

Cortisol suppression

Light exposure during sleep triggers a mild cortisol response. Light at 2am is a cortisol stimulus at 2am. Blocking it removes a source of early arousal most people don't know they have.

Circadian precision

Your circadian clock drifts when light inputs are inconsistent. Consistent dark signals = a tighter, more predictable sleep-wake rhythm. You wake up at the same time without an alarm because your body knows what time it is.

What we built

One hundred masks. Four things that actually matter.

Total blackout

Not "light-reducing." Not "sleep-friendly." Zero lux at the eye. The shell geometry and nose seal are designed so no light enters from the sides, the bridge, or underneath. We tested this with a lux meter, not a description sheet. This was the hardest thing to get right — most masks fail at the nose.

3D contoured shell

The cups are raised and shaped so the mask doesn't press against your eyelids. No lash drag. No pressure on the eye socket. Flat masks that sit directly on the lids are quietly disrupting the REM sleep they claim to improve.

Velcro adjustment — no headband slip

Elastic headbands lose tension and pull forward overnight. Velcro straps stay exactly where you set them. One size actually fits all because the adjustment range is wide and retention is mechanical, not elastic.

Materials that don't wake you up

The face contact layer is soft, breathable, and doesn't absorb heat. No synthetic materials against the skin that get warm and cause arousal from temperature. The outer shell maintains its geometry without being rigid or plasticky.

The numbers behind it

3 lux

The threshold at which ambient light begins measurably suppressing melatonin production during sleep, even through closed eyelids.

Gooley et al., Journal of Clinical Endocrinology & Metabolism, 2011

+14%

Increase in slow-wave (deep) sleep duration observed in subjects wearing a sleep mask versus controls sleeping in the same room.

Hu et al., Critical Care, 2010

90 min

How far before sleep your melatonin onset shifts when exposed to room-level light in the evening. A mask accelerates the return once you're in bed.

Lewy et al., Science, 1980

Why most masks don't work

The checklist every mask should pass. Most fail at step one.

What matters	Moongreens Mask	Generic sleep mask
Complete light seal (0 lux at the eye)	✓ Measured zero	✗ Light enters at nose bridge
3D contoured cups (no eyelid contact)	✓ Eyes float free	✗ Flat foam on lids
Stays in place all night	✓ Velcro retention	✗ Elastic slips forward
Breathable face material	✓ Low heat retention	— Usually synthetic
Fits all head sizes and sleep positions	✓ Wide velcro range	— One elastic size

Free with your subscription. $29 if you just want the mask.

Tested across 100+ masks. Kept the one that actually seals light, stays on, and doesn't press your eyelids.

Start your Moongreens subscription

Customers praised this contoured sleep mask for its comfortable 3D design that creates space around eyelids and lashes. "The contour is subtle but makes a big difference," said one shopper. The adjustable strap stays secure without excessive tightness. Lightweight and compact with included pouch, it's ideal for travel and side sleeping. Most reviews were highly positive.

5 stars: 30 (71%)
4 stars: 9 (21%)
3 stars: 3 (7%)
2 stars: 0 (0%)
1 star: 0 (0%)

Good mask for home and travel

Good balance of lightweight and structured. It keeps its shape without feeling stiff.

Stays put better than expected

It stays in place surprisingly well without having to tighten the strap too much.

Exactly what I wanted

Exactly what I was looking for: simple, adjustable, and comfortable around the eyes.

Good for side sleeping

I sleep on my side and this has been comfortable for me. It is not overly bulky around the edges.

My new travel mask

This lives in my carry-on now. It takes up almost no room and the pouch makes it easy to keep track of.

Better than flat masks

I have tried several flat masks and always end up taking them off. This one gives my eyes enough space that I can actually keep it on.

Very comfortable around the eyes

I was mainly looking for something that would not sit directly on my eyes. This shape works much better for me.

Stays in place

It stayed in place better than I expected and the strap was easy to adjust. Comfortable enough for a full night.

Great for travel

Brought this on a flight and it was really comfortable. The carry bag also keeps it from getting lost in my backpack.

Simple, comfortable, useful

Simple product, but the contoured design makes it much more comfortable than a standard eye mask.

Would buy again

I would buy this again just for the contour. It feels much less distracting on my face than a flat mask.

Feels light on my face

Very light and comfortable. I like that it creates a little space instead of sitting right on the eyelids.

Adjusts easily

Very easy to adjust and it stays where I put it. I like the low-profile feel.

Happy with the fit

The fit works well for me and the material feels soft. I have been using it almost every night.

Great little sleep mask

Nice little mask. The shape is comfortable and the carry pouch is a thoughtful addition.

Lightweight and comfortable

Feels light on my face and does not make me feel boxed in. The adjustable strap is simple and works well.

Nice contoured shape

The contour is subtle but makes a big difference. I prefer this shape to a flat fabric mask.

Does not press on my eyelids

The eye area has enough space that my lashes are not being pressed down. That alone makes it much better than my old mask.

Soft and easy to adjust

The material feels soft and the fit is easy to dial in. I appreciate that the strap does not need to be overly tight.

Good everyday sleep mask

Straightforward sleep mask with a much nicer fit than the basic flat ones. The contour is what makes it comfortable.

The contour makes a difference

The eye cups are the biggest improvement for me. I can blink normally and the mask does not feel pressed against my lashes.

Finally a mask I can wear

I like that the fabric is not sitting directly on my eyelids. The strap is easy to adjust and I can get a secure fit without making it too tight.

Very practical

A practical sleep mask that is easy to adjust. I have had no trouble getting a comfortable fit.

Much better fit

This fits my face much better than the cheap flat masks I have used before. The 3D shape is the main reason.

Simple and comfortable

Nothing complicated about it, just a comfortable shape and an adjustable fit. I have been reaching for it every night.

Comfortable even for long nights

I have worn it for long overnight flights and found it comfortable. It is lightweight and easy to store.

The shape is great

The shape around the eyes is really nice and the mask does not feel overly padded or bulky.

Fits without feeling tight

I can get a snug fit without making the strap uncomfortable. Good balance between secure and soft.

Very happy with it

Happy with the overall quality. The stitching looks clean and the mask feels comfortable.

Perfect for flights

Used it on two flights already and it packs down small. The included pouch is handy for keeping it clean.

Nice lightweight mask

Very lightweight and not bulky on my face. I have been using it both at home and when traveling.

Really comfortable

Lightweight, soft, and easy to adjust. I was able to sleep with it on without constantly wanting to take it off.

Comfortable fit

The contoured shape gives my eyes more room than the flat masks I have used before. It feels much more comfortable for longer wear.

Nice and compact

Small enough to keep in my travel bag all the time. The pouch helps keep it clean.