• Cooling blackout sleep mask || Navy blue
  • Cooling blackout sleep mask || Navy blue
  • Cooling blackout sleep mask || Navy blue
  • Cooling blackout sleep mask || Navy blue
1 4

NATTCOOL™ SLEEP TECH

Black-out sleep mask

Black-out sleep mask

4.7
Rated 4.7 out of 5 stars
182 Reviews
£74.90
£0.00 £74.90

£0.20 a night

8x more breathable
3x faster dry
2x softer
Color: Navy blue
8x more breathable
3x faster dry
2x softer
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The NATTCOOL™ blackout sleep mask adjusts to your personal features to ensure there is no pressure on your eyes, nose, or around your head. 100% darkness, 100% sleep comfort. Guaranteed.

Recommended by sleep experts

Blocking out 100% of light, the Stay cool blackout sleep mask has fully adjustable eyecups for perfect coverage and an easily adjustable velcro strap to fit any head size. Sleep better in a natural and sustainable way.

“Sleep, temperature and comfort are functionally linked. For a good night you need feel comfortable warm, not cold, nor hot. Dagsmejan Sleepwear implements two basic principle for a good night of sleep in one product: It helps you maintain the right temperature through the night and it fabric feels so comfortable that it is a
true pleasure and reward to wear.” — Dr.  Roy Raymann, Sleep Neuroscientist and Ambulatory (Sleep) Technology expert, holding a PhD in Sleep &Thermoregulation

Product details & care

Details

  • Main fabric: NATTCOOL™ fabric, 93% Microlyocell from eucalyptus and 7% Elastane/ Lycra
  • Padding eyecups: 100% Natural Latex

Care

  • Handwash only. Do not tumble dry. Do not bleach. Do not dry clean

Natural & sustainable

NATTCOOL™ is made from eucalyptus trees and other cellulosic fibres. Wood and pulp used by Dagsmejan comes from natural forests and sustainably managed plantations. Eucalyptus needs 20 times less water than cotton and 5 times less high-quality farmland. Dagsmejan uses fibres from Lenzing, one of the most sustainable and ethical producers of any fibres worldwide.

  • Eucalyptus fibres: Europe and Africa
  • Sleep technology: Switzerland
  • Knitting and dyeing of the fabric: Switzerland, Italy & Austria
  • Garment making: Romania

Read more about Stay Cool

Fit & size

Fit:

  • Fitted, with adjustable headband
  • One size fits all

Free returns & comfort guarantee

Sleep in your Dagsmejan sleepwear for up to 14 days, if you don't love it return it for a full refund. Free returns from the US, the UK and the EU.

Free delivery for all orders above 150 USD.

View full details

Sleep better with women's cooling pyjamas

  • The coolest sleep comfort

    The coolest sleep comfort

    The coolest sleep comfort

    Stay cool all night with our cooling women's pyjamas —Softer than silk, cooler than linen and better moisture management than cotton.

    - 8x more breathable than cotton 
    - Quick drying —dries in 1/3 of the time of cotton
    - Releases water vapour 60% better than cotton

    Read more about Stay Cool

  • NATTCOOL™ Technology

    NATTCOOL™ Technology

    NATTCOOL™ Technology

    Cool down and stay dry through moisture evaporation & transport. With exceptional moisture management and temperature regulating properties compared to other fibres such as cotton, bamboo and synthetic fabrics. No more night sweats with the best women's cooling pyjamas!

    Read more

  • Cooling eucalyptus

    Cooling eucalyptus

    Cooling eucalyptus

    NATTCOOL™ fabric is based on Eucalyptus — an environmentally friendly high tech fibre. Requiring up to 20x less water and 5x less farm land than cotton. Sleep easy knowing that these super soft eucalyptus pyjamas don't contribute to an adverse impact on the environment.

    Read more about eucalyptus

  • Developed with our experts

    Developed with our experts

    Developed with our experts

    "Thermoregulation is key for good sleep. To fall asleep and enjoy a deep, restorative sleep we need our body temperature to drop. I recommend Dagsmejan; their pyjamas help us to cool down or warm up depending on our needs to sleep deeper for longer."

    — Dr. Lutz Graumann

  • The coolest sleep comfort

    Stay cool all night with our cooling women's pyjamas —Softer than silk, cooler than linen and better moisture management than cotton.

    - 8x more breathable than cotton 
    - Quick drying —dries in 1/3 of the time of cotton
    - Releases water vapour 60% better than cotton

    Read more about Stay Cool

  • NATTCOOL™ Technology

    Cool down and stay dry through moisture evaporation & transport. With exceptional moisture management and temperature regulating properties compared to other fibres such as cotton, bamboo and synthetic fabrics. No more night sweats with the best women's cooling pyjamas!

    Read more

  • Cooling eucalyptus

    NATTCOOL™ fabric is based on Eucalyptus — an environmentally friendly high tech fibre. Requiring up to 20x less water and 5x less farm land than cotton. Sleep easy knowing that these super soft eucalyptus pyjamas don't contribute to an adverse impact on the environment.

    Read more about eucalyptus

  • Developed with our experts

    "Thermoregulation is key for good sleep. To fall asleep and enjoy a deep, restorative sleep we need our body temperature to drop. I recommend Dagsmejan; their pyjamas help us to cool down or warm up depending on our needs to sleep deeper for longer."

    — Dr. Lutz Graumann

4.7
Rated 4.7 out of 5 stars
Based on 182 reviews
Total 5 star reviews: 136 Total 4 star reviews: 37 Total 3 star reviews: 8 Total 2 star reviews: 0 Total 1 star reviews: 1
97%would recommend these products
Sleep comfort with Dagsmejan?Rated 4.7 on a scale of 1 to 5
Helps to regulate temperature and moisture?Rated 4.6 on a scale of 1 to 5
How is the sizing?Rated 0.0 on a scale of minus 2 to 2
Write a Review (Opens in a new window)
182 reviews
  • RJ
    Rebeka J.
    Flag of Switzerland
    Verified Buyer
    Reviewing
    Black-out sleep mask — NATTCOOL™
    I recommend this product
    My sleep type I'm often cold
    Rated 5 out of 5 stars
    1 month ago
    Darkens

    Makes it really nice and dark, doesn't make your eyes "hot", doesn't cause pressure points, very comfortable material, size is easy to adjust.

    Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5
    Helps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5
    How is the sizing?Rated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • LB
    Leander B.
    Flag of Germany
    Verified Buyer
    Reviewing
    Sleep mask — NATTCOOL™
    I recommend this product
    My sleep type I'm often warm and sometimes sweat
    Rated 4 out of 5 stars
    1 month ago
    Good product

    The mask is comfortable to wear, but is a bit tight. For the price, I would have liked nicer packaging. Even though the mask is well made and does what it promises, it doesn't seem that high quality because it's just delivered in a cheap plastic bag. It's a shame, especially as a gift.

    Sleep comfort with Dagsmejan?Rated 4.0 on a scale of 1 to 5
    Helps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5
    How is the sizing?Rated -1.0 on a scale of minus 2 to 2
    Was this helpful?
  • RB
    René B.
    Flag of Switzerland
    Verified Buyer
    Reviewing
    Black-out sleep mask — NATTCOOL™
    I recommend this product
    My sleep type I always have the right temperature
    Rated 5 out of 5 stars
    1 month ago
    Very pleasant

    Feels good

    Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5
    Helps to regulate temperature and moisture?Rated 4.0 on a scale of 1 to 5
    How is the sizing?Rated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • UK
    Urs K.
    Flag of Switzerland
    Verified Buyer
    Reviewing
    Sleep mask — NATTCOOL™
    I recommend this product
    My sleep type I'm often warm and sometimes sweat
    Rated 5 out of 5 stars
    2 months ago
    Super comfortable!

    A very comfortable sleep mask to wear, now indispensable!

    Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5
    Helps to regulate temperature and moisture?Rated 4.0 on a scale of 1 to 5
    How is the sizing?Rated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • KG
    Kai G.
    Flag of Germany
    Verified Buyer
    Reviewing
    Sleep mask — NATTCOOL™
    I recommend this product
    My sleep type I always have the right temperature
    Rated 5 out of 5 stars
    3 months ago
    Best..

    The best sleep mask I've ever had, worth the money.

    Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5
    Helps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5
    How is the sizing?Rated 0.0 on a scale of minus 2 to 2
    Was this helpful?