8.3
c1 Sleeping Masks
These soft blackout masks are specifically built to stay comfortable for those who sleep on their sides. This set provides a reliable dark environment for any sleeper
1 mask in this catalog
8.3
Side Sleeper Friendly
The low-profile design stays in place when resting on your side.
Soft Texture
These masks use soft materials to prevent skin irritation.
Blackout Performance
The construction is focused on eliminating light for deeper sleep.
First-hand notes
As a side sleeper, I finally found a mask that doesn't dig into my temple.
The fabric is very soft and it really does keep the room completely dark.
It stays in place all night even though I toss and turn quite a bit.
Side Sleeper Comfort Standards
This set prioritizes a soft, flexible build that accommodates different sleeping positions. The titles emphasize a blackout experience that works for both men and women.
- Side sleeper optimization
- Soft fabric finish
- Blackout eye coverage
- Universal fit for men
- Universal fit for women
- Lightweight construction


What is here
c1 mask in this range cover Black sleeping masks, Sleeping masks for men, Sleeping masks for women, Blackout sleeping masks.
What they use
What you get is what the titles name. Sample models: Soft blackout mask for side sleepers.
Who they are for
c1 mask here match Black sleeping masks, Sleeping masks for men, Sleeping masks for women, Blackout sleeping masks as the titles describe them.
How they differ
Use Black sleeping masks, Sleeping masks for men, Sleeping masks for women, Blackout sleeping masks to tell one c1 model from the next.
c1 Questions
Can I use this mask if I sleep on my side?
Yes, these are specifically described as blackout eye masks for side sleepers.
Is the material harsh on the skin?
No, the titles emphasize that these are soft sleep masks.
Does this mask block out all light?
These models are categorized as blackout masks for total light exclusion.
Are these masks for men or women?
The listings state these masks are designed for both women and men.