Best sleep mask ever
SideSleeperZ Sleep Mask
$54.99
The Kickstarter 'Backer Favorite' modular sleep mask, engineered for a slip-proof custom fit for any head shape or sleeping position.
- Patented modular 'Arc' strap
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Ultra-soft hypoallergenic Modal fabric
- Pressure relief for Eyes, Ears, and Nose
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Hollow 100% Blackout Nose Guard
30-Day satisfaction guarantee!
Pairs well with
SideSleeperZ Sleep Mask
$54.99
Watch our Kickstarter Video!
Watch our Kickstarter Video!
We were blown away by the Kickstarter Community’s reception, with 1700+ orders worldwide!
"If your mask does not stay put, SideSleeperZ has you covered!"
-Dr. Chris Winter, MD
Author of The Sleep Solution, Sleep Consultant for the LA Dodgers and OKC Thunder.
Trusted by Professionals
Trusted by Professionals
Kim, an original Kickstarter backer and Emergency Room Nurse, shares her experience with 24 hour daylight!
Worn by Champions
Toronto Blue Jays
2025 American League Champions
Ryan Crouser
3x Olympic Gold Medalist
Jen Thompson
13x IPF World Powerlifting Champion
Not Only For Sleeping
Not Only For Sleeping
A secure-fit for sensory deprivation training! Improve balance and spatial awareness for sports like grappling, lifting, and gymnastics!
Customer Reviews
Overall rating: 4.8 / 5 from 503 reviews.
Most comfortable one I’ve used and it’s working great.
As a side sleeper, I have never known such darkness. Not a single photon can get through this thing, no matter how much I scrunch my face up or press it into the pillow.
Super comfortable and easy to put on and take off. I could not be more satisfied.
This is the first sleep mask I've ever been able to wear without interruption for an entire night!
Performs as advertised. Works great!
Best investment I’ve made in a long time. My sleep quality, as measured by my Apple i Watch’s Health app, has dramatically increased in the short time I’ve worn this eye mask. i strongly recommend it! Thank you!
Mask is super comfortable and blocks out all light no matter what position your in.
It is the better sleep mask.
This sleepmask is the best I ever tried! It's soft, very comfortable and absolutely opaque! You don't sweat and can open your eyes under it. It's seamless, so you don't have any marks in your face in the morning and it's still on your head, it doesn't matter how much you turn your head at night. It's just the best, buy, buy, buy!
Can’t sleep without it. Tried the other competitor and it slipped right off. This does not slip off and it feels like nothing is on when I go to bed.
Truly amazing mask. I always dread traveling as I need complete blackout to sleep well. The first hint of sunlight wakes me up. Every mask I’ve ever had has fallen off after a few hours or sooner. This not only remains comfortably in place but retains 100% blackout in every position I’ve slept. If the construction holds up, I will definitely be purchasing a few more to keep in my camper and to have on hand as a dedicated travel mask.
Stays on, doesn't crush my eyelashes, no light leakage. 10/10 would buy again
Blocks light out completely and stays on the whole night as a side sleeper
I'm a crazy sleeper and it stays on through the night. My blankets are sideways, my pillow is on the floor. I'm fighting for my life in my sleep apparently lol But this thing actually works and blocks ALL light. And it's very comfortable. I love it!
Thank you Side Sleeper Zzzzzzzz!!!!!
This is the first sleep mask that stays on my face through the night more than 60% of the time. It’s not 100% but I am extremely happy with it. Very comfy, very adjustable. Love it!
I am very impressed about the blackout effect of this Mask (no light scape at all), and secondly it is genuinely comfortable to use, it doesn't damage your ear's sides as all of them do. Then, I love the fact that it stays on all night! However I would say that if you sleep with a very rough cotton texture pillow case then it might move a tiny bit, but otherwise it ll stay on in most cases especially if you sleep with a silk texture like pillow case. Overall, it is the best sleeping gadget I bought in a long time, well done SideSleeper!
Very pleased with this product. Pretty much as advertised, doesn't come off. It's perfectly dark and incredibly comfortable. Well done!
Extremely comfortable, complete blackout, and hasn't shifted once when sleeping. Exactly what I was looking for.
Great mask, finally one that doesn't feel like it's trying to cut my ears off from the top
My favorite sleep mask. Total darkness. Very comfortable
Love it
Fantastic. Couldn’t do sleep masks. Can do this one.
I am enjoying it! Upgraded from my old sleep mask & don’t see any light when I’m wearing it and can sleep on my side without it moving. Really cool design.
Amazing sleep mask. Complete darkness. Im a side sleeper and I have never had such a comfortable sleep mask. Does not move, easy to adjust, I love the purchase!
The best sleep mask I have ever owned. Liked it so much I ordered a second one for my travels. No gaps to let light in and very comfortable. Highly recommended!.
Working very well so far. Quick shipment. Thank you!
Fits well and doesn’t hurt my ears.
The best, most comfortable eye mask. I dont even notice it while im sleeping and it totally blocks out any light.
Fits well. Don't even notice it, while falling asleep. Doesn't seem to bother me, if I wake up in the middle of the night. It stays put.
Only mask that stays on while I sleep and is comfortable.
Sleep mask stays on the entire night and blocks all of the light that normally gets past other sleep masks.
Slept so good I forgot what day it was!
Stays on comfortably (no annoyijng ear contact) and totally blacks out - Im getting 2+ more hours of sleep. No more nagging my wife sbout her reading light being on - I dont notice if!
Finally - a sleep mask that blocks out all of the light, BUT DOESNT SLIP OFF OF MY HEAD! Best purchase ever. I’m immediately getting a backup.
The mask is very comfortable.
Best mask ever
Best sleep mask I’ve ever used. Total blackout. No pressure on my eyes or nose. Not hot. Completely stays in place and I move around a lot! This will be at the top of my list to gift friends and family this year. Great design!
Amazing. Doesn’t come off.