Instant darkness and privacy with a zDen Personal Sleep Sanctuary.
Sharing a room shouldn’t mean sacrificing quality sleep.
Is someone else's schedule costing you sleep?
Whether you're sharing a dorm, bedroom, or living space, different sleep schedules can make getting quality sleep a challenge. Roommates studying late, lights turning on early, or someone watching TV can disrupt your sleep, even after you've fallen asleep.
Take control of your sleep environment.
The patented zDen Personal Sleep Sanctuary blocks over 99% of light to create your own dark, private sleep space, even when others are awake. Simply place your pillow inside, close the front drapes, and sleep on your schedule without needing the entire room to go dark.
zDen users are reporting better sleep
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93%
reported fewer light-related awakenings
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3 out of 4
reported falling asleep faster
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79%
reported better sleep quality and feeling more refreshed
Based on a before-and-after survey of zDen users (August 2026, n=42).
Different schedules? No problem.
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Set up in seconds
Pop open your zDen, place your pillow inside, and your personal sleep space is ready.
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Control your environment
Close the front drapes for darkness and privacy. Adjust the mesh ventilation windows to manage airflow and light.
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Sleep on your schedule
Create a consistent dark sleep space, whether you're sleeping early, waking late, or sharing a room with someone on a different schedule.
FAQs
Will zDen fit on my bed?
Yes. zDen fits on twin and twin XL mattresses, as well as larger beds. It measures 30" W × 24" D × 24" H and holds up to a queen-size pillow.
What if my roommate keeps the lights on?
zDen blocks over 99% of light when the front drapes and ventilation covers are closed, helping create a dark sleep space even when someone else is awake.
Does zDen cover my whole body?
No. zDen covers only your upper body. Your lower body stays outside under your usual covers. With no zippers or snaps, it's easy to enter and exit.
Do I need blackout curtains?
Not necessarily. Blackout curtains help reduce light coming through windows, but they don't block light from TVs, lamps, electronics, or other sources inside the room. zDen creates darkness inside the room where you sleep.
How does airflow work?
Three mesh ventilation windows with adjustable solid fabric covers allow you to manage airflow and light. You can open the window furthest from nearby light sources to help maintain darkness.
Stop waiting for everyone else to go to sleep.
Create your own dark, private sleep space with a zDen Personal Sleep Sanctuary and sleep on your schedule, even when others are awake.
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