Instantly turn day into night with zDen Personal Sleep Sanctuary.

Working nights shouldn't mean sacrificing quality sleep.

Before zDen: Person struggling to sleep in a brightly lit bedroom.

Is daylight making it harder to sleep before or after your shift?

When you work nights or changing schedules, sleeping during daylight hours can be challenging. Whether you're taking a pre-shift nap or sleeping after work, sunlight, household activity, and lights turning on can disrupt your sleep, even after you've fallen asleep.

With zDen: Person using a zDen Personal Sleep Sanctuary to create a dark sleep space during daylight hours.

Take control of your sleep environment, day or night.

The patented zDen Personal Sleep Sanctuary blocks over 99% of light to create your own dark, private sleep space, even when the sun is up.

Simply place your pillow inside, close the front drapes, and sleep on your schedule without needing to darken the entire room.

View zDen Product Details

zDen users are reporting better sleep

  • 93%

    reported fewer light-related awakenings

  • 3 out of 4

    reported falling asleep faster

  • 79%

    reported better sleep quality and feeling more refreshed

Based on a before-and-after survey of zDen users (August 2026, n=42). 

    Easy to use, on your schedule.

    • Set up in seconds

      Pop open your zDen, place your pillow inside, and your personal sleep space is ready.

    • Control your environment

      Close the front drapes for darkness and privacy. Adjust the mesh ventilation windows to manage airflow and light.

    • Sleep on your schedule

      Create a consistent dark sleep space, whether you're napping before a shift, sleeping after work, or adjusting to changing schedules.

    See why zDen users are sleeping better

    zDen features

    FAQs

    Can zDen help me sleep before or after a night shift?

    Yes! Whether you're taking a nap before your shift, sleeping after work, or adjusting to changing schedules, zDen blocks over 99% of light to create a dark, private sleep space whenever you need it, day or night.

    Will zDen block daylight when I sleep during the day?

    Yes. zDen blocks over 99% of light when the front drapes and ventilation covers are closed, helping create a dark sleep space even when the sun is up.

    Do I still need blackout curtains?

    Not necessarily. Blackout curtains help block light from windows, but light can still enter through gaps or come from electronics and other sources inside your room. zDen helps block unwanted light right where you sleep.

    What if other people are awake while I'm sleeping?

    zDen creates a personal, private sleep space that helps reduce light and visual distractions while others are awake. It doesn't block household noise, so it's still helpful to communicate your sleep schedule to others.

    Can I move around and get out easily?

    Yes. zDen covers only your upper body, with no zippers or snaps. Its flexible frame moves with you as you shift sleep positions throughout your sleep.

    Will zDen get too warm?

    Three mesh ventilation windows with adjustable solid fabric covers allow you to manage airflow and light. For maximum darkness, open the window furthest from nearby light sources. Comfort may vary depending on room temperature.

    Can I use zDen with my CPAP?

    Yes. zDen has two openings in the lower back corners to accommodate standard CPAP hoses or charging cables.

    Your shift. Your sleep. Your rules.

    Protect your sleep, before and after every shift. Create a dark, private “do not disturb” sleep zone anytime you need it. 

    $109.00 $87.50
    Free U.S. shipping + discounted international shipping
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