The coolest sleep comfort
NATTCOOL™ SLEEP TECH
T-shirt
T-shirt
£0.26 a night
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This cooling sleep t-shirt is engineered for a cool comfort night and day even when the temperature rises.
The sleep benefits
The sleep benefits
Too hot to sleep? Experience a deeper and long sleep with the best cooling pyjamas t-shirt for men.
- 8x more breathable than cotton
- NATTCOOL™ combines smooth softness with superior moisture management
- Drying in 1/3 of the time of cotton
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 men' cooling sleep t-shirt
Care
- Wash up to 40 degrees Celsius. Do not tumble dry. Do not bleach. Do not dry clean
- The care instructions are printed on the inside of the men's sleep t-shirt
- Learn to care for super-fine natural fibres in our care guide
Natural & sustainable
Natural & sustainable
Made from eucalyptus trees and other cellulosic fibres NATTCOOL™ is not only exceptionally cooling but also exceptionally sustainable. The botanic fibres used by Dagsmejan comes from natural forests and sustainably managed plantations. Eucalyptus requires 20 x less water and 5x less high-quality farmland than cotton.We work with Lenzing, one of the most sustainable producers of fibres worldwide.
- 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:
- Semi-fitted
- Chest width (M): 102cm (3' 4″) +/- 6 cm (2.4″) per size
- Body length (M): 75cm (2' 5″) +/- 1 cm (0.4″) per size
Model information:
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.
Sleep better with men's cooling pyjamas

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The coolest sleep comfort
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NATTCOOL™ Technology
NATTCOOL™ Technology
This fabric cools you down and keeps you dry through moisture evaporation and transport. With great moisture management and temperature regulating properties compared to other fibres such as cotton, bamboo and synthetic fabrics. No more night sweats with the best men's cooling pyjamas!
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Cooling eucalyptus
Cooling eucalyptus
NATTCOOL™ fabric is based on Eucalyptus. Eucalyptus is nature's 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.
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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 pyjamas 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, every night with Dagsmejan's cooling pyjamas for men.
- 8x more breathable than cotton
- Dries in 1/3 of the time of cotton
- Releases water vapour 60% better than cotton -
NATTCOOL™ Technology
This fabric cools you down and keeps you dry through moisture evaporation and transport. With great moisture management and temperature regulating properties compared to other fibres such as cotton, bamboo and synthetic fabrics. No more night sweats with the best men's cooling pyjamas!
-
Cooling eucalyptus
NATTCOOL™ fabric is based on Eucalyptus. Eucalyptus is nature's 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.
-
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 pyjamas 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