The coolest sleep comfort
NATTCOOL™ SLEEP TECH
T-shirt
T-shirt
$0.26 a night
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Stay cool and comfortable even as the temperature rises with this women's cooling sleep t-shirt.
The sleep benefits
The sleep benefits
Sleep cool all night even as the temperature rises with our cooling pajamas t-shirt for women.
- 8x more breathable than cotton
- Pairing evaporative cooling with moisture wicking so you stay cool and dry.
- 2x softer than cotton, smoother than silk
“As a woman that sometimes struggles with night sweats and fluctuations in the bedroom temperature, I welcomed the idea of pjs that are soft and comfortable. I’ve enjoyed sleeping without waking up due to excessive sweating or overheating. The fabric is very comfortable and soft and the style is flattering and works really well” –Dr. Funke Afolabi- Brown, triple board-certified sleep medicine physician
Product details & care
Product details & care
Details
- NATTCOOL™ fabric: 92% lyocell and 8% elastane/ lycra
- Flat ergonomic seams and slightly front placed side seams mean that you have a minimum of friction at night
- Tagless design, all care instructions are printed in the cooling pajamas top
Care
- Wash up to 40 degrees Celsius. Do not tumble dry. Do not bleach. Do not dry clean
- You can also find the care instructions printed on the inside of your cooling sleep t-shirt
- Learn to care for super-fine natural fibres in our care guide
Natural & sustainable
Natural & sustainable
The cooling power of NATTCOOL™ comes from eucalyptus trees and other botanic fibres. The wood and pulp used to produce the stay cool collection comes exclusive from sustainably managed plantations and natural forests. Dagsmejan collaborates with Lenzing which is one of the most ethical produces of fibres in the world. Eucalyptus requires 20x less water than cotton and 5x less high-quality farmland.
- Eucalyptus fibres: Europe and Africa
- Sleep technology: Switzerland
- Knitting and dyeing of the fabric: Switzerland, Italy & Austria
- Garment making: Romania
Fit & size
Fit & size
Fit:
- Loose-fitted
- Chest width (S): 82cm (2' 8″) +/- 6cm (2.4″) per size
- Body length (S): 66cm (2' 2″) +/- 1cm (0.4″) per size
Model information:
- Fardau in Cheetah, Santorini and Spring blossom is 179cm (5′ 10½″) and wears size S
- Chelsea in Navy blue, Purple and Lavender is 180cm (5′ 11″) and wears size S
- Stephanie in Raspberry, Turquoise and Cool grey is 178cm tall (5′ 10″) and wears size S
- Naomy in others is 176cm tall (5′ 9″) and wears size S
Free returns & comfort guarantee
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.














































Size Guide

SIZE | XS | S | M | L | XL | 2XL |
EU/DE/CH | 34-36 | 36-38 | 38-40 | 42-44 | 46 | 48 |
Chest | 79.5-84.5 | 85.5-89.5 | 90.5-95 | 96-101 | 102-107 | 108-113 |
Waist | 63.5-68.5 | 69.5-73.5 | 74.5-79 | 80-85 | 86-91 | 92-97 |
Hip | 87.5-92.5 | 93.5-97.5 | 98.5-102.5 | 103.5-107.5 | 108.5-112.5 | 113.5-117.5 |
Inleg length | 78 | 78 | 78 | 78 | 78 | 78 |
SIZE | XS | S | M | L | XL | 2XL |
US | 4-6 | 6-8 | 8-10 | 12-14 | 16 | 18 |
UK | 8-10 | 10-12 | 12-14 | 16-18 | 20 | 22 |
Chest | 31.3-33.3 | 33.7-35.2 | 35.6-37.4 | 37.8-39.8 | 40.2-42.1 | 42.5-44.5 |
Waist | 25-27 | 27.4-28.9 | 29.3-31.1 | 31.5-33.5 | 33.9-35.8 | 36.2-38.2 |
Hip | 34.4-36.4 | 36.8-38.4 | 38.8-40.4 | 40.7-42.3 | 42.7-44.3 | 44.7-46.3 |
Inleg length | 30.7 | 30.7 | 30.7 | 30.7 | 30.7 | 30.7 |

SIZE | S | M | L | XL | 2XL |
EU/DE/CH | 46-48 | 50 | 52-54 | 56 | 58-60 |
Chest | 91-97 | 98-103 | 104-109 | 110-115 | 116-121 |
Waist | 80.5-85.5 | 86.5-90.5 | 91.5-96 | 97-102 | 103-108 |
Hip | 94.5-99.5 | 100.5-104.5 | 105.5-109.5 | 110.5-114.5 | 115.5-119.5 |
Inleg length | 82.5 | 83 | 83.5 | 84 | 84.5 |
SIZE | S | M | L | XL | 2XL |
US/UK | 36-38 | 40 | 42-44 | 46 | 48-50 |
Chest | 35.8-38.2 | 38.6-40.6 | 40.9-42.9 | 43.3-45.3 | 45.7-47.6 |
Waist | 31.7-33.7 | 34-35.6 | 36-37.8 | 38.2-40.2 | 40.6-42.5 |
Hip | 37.2-39.2 | 39.6-41.1 | 41.5-43.1 | 43.5-45.1 | 45.5-47 |
Inleg length | 32.5 | 32.7 | 32.9 | 33.1 | 33.3 |
Sleep better with women's cooling pajamas

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The coolest sleep comfort
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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 pajamas!
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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 pajamas don't contribute to an adverse impact on the environment.
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Recommended by sleep experts
Recommended by sleep 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 pajamas help us to cool down or warm up depending on our needs to sleep deeper for longer."
— Dr. Lutz Graumann
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The coolest sleep comfort
Stay cool all night with our cooling women's pajamas —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 -
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 pajamas!
-
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 pajamas don't contribute to an adverse impact on the environment.
-
Recommended by sleep 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 pajamas help us to cool down or warm up depending on our needs to sleep deeper for longer."
— Dr. Lutz Graumann

SLEEP IN IT, LOVE IT OR RETURN IT
- VFVictoria F.Verified BuyerReviewingShort sleeve top — NATTCOOL™I recommend this productMy sleep type I'm sometimes warm and sometimes coldRated 5 out of 5 stars3 minutes agoShort sleeve top in Navy
Butter soft material that drapes beautifully, my Dagsmejan sleep wear is my new go to clothing for a comfortable nights sleep.
Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5Poor ExcellentHelps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5I'm too warm/ cold/ sweaty I'm very comfortableHow is the sizing?Rated 0.0 on a scale of minus 2 to 2Runs small True to size Runs largeWas this helpful? - BYBeverly Y.Verified BuyerReviewingLong slip dress — NATTCOOL™I recommend this productMy sleep type I'm sometimes warm and sometimes coldRated 5 out of 5 stars2 days agoLove this
This is exactly as advertised. Great fit- great fabric and keeps em cool as advertised.
Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5Poor ExcellentHelps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5I'm too warm/ cold/ sweaty I'm very comfortableHow is the sizing?Rated 0.0 on a scale of minus 2 to 2Runs small True to size Runs largeWas this helpful? - RBRon B.Verified BuyerReviewingShort sleeve top — NATTCOOL™I recommend this productMy sleep type I'm sometimes warm and sometimes coldRated 5 out of 5 stars4 days agoPerfect summer pajama
My wife loves them!!!! Same as review on shorts
Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5Poor ExcellentHelps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5I'm too warm/ cold/ sweaty I'm very comfortableHow is the sizing?Rated 0.0 on a scale of minus 2 to 2Runs small True to size Runs largeWas this helpful? - RBRon B.Verified BuyerReviewingShorts — NATTCOOL™I recommend this productMy sleep type I'm sometimes warm and sometimes coldRated 5 out of 5 stars4 days agoPerfect Summer Pajama
My wife loves them! They are incredibly soft, they keep their shape, comfortable and fit perfectly!
Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5Poor ExcellentHelps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5I'm too warm/ cold/ sweaty I'm very comfortableHow is the sizing?Rated 0.0 on a scale of minus 2 to 2Runs small True to size Runs largeWas this helpful? - ASAlice S.Verified BuyerReviewingSlip dress — NATTCOOL™I recommend this productMy sleep type I'm often coldRated 5 out of 5 stars1 week agoNightgown
Love this nightgown. Beautiful soft fabric.
Sleep comfort with Dagsmejan?Rated 5.0 on a scale of 1 to 5Poor ExcellentHelps to regulate temperature and moisture?Rated 5.0 on a scale of 1 to 5I'm too warm/ cold/ sweaty I'm very comfortableHow is the sizing?Rated 0.0 on a scale of minus 2 to 2Runs small True to size Runs largeWas this helpful?