The coolest sleep comfort
NATTCOOL™ SLEEP TECH
Long sleeve top
Long sleeve top
$0.35 a night
Couldn't load pickup availability
Stay cool and comfortable all night long in this smooth, cooling pajama top.
The sleep benefits
The sleep benefits
Do you sleep hot? Keep cool every night with this cooling sleep long sleeve top:
- Designed for superior moisture-wicking, drying three times faster than cotton
- 8x more breathable than cotton
- 2x softer than cotton
“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
Testing protocol: Flat testing | Torso testing | Real-life wear testing
Product details & care
Product details & care
Details
- NATTCOOL™ fabric: 93% lyocell and 7% elastane/ lycra
- A minimum of friction at night thanks to the flat ergonomic seams and slightly front placed side seams
- Tagless design, all care instructions are printed in the cooling long sleeve top
Care
- Wash up to 40 degrees Celsius. Do not tumble dry. Do not bleach. Do not dry clean
- Care instructions are printed on the inside of the sleep long sleeve top
- Find out how to care for super-fine natural fibres in our care guide
Natural & sustainable
Natural & sustainable
NATTCOOL™ is made from eucalyptus trees and other natural fibers. Dagsmejan sources wood and pulp from sustainably managed forests and plantations. Eucalyptus uses 20 times less water than cotton and five times less premium farmland. Dagsmejan works with Lenzing, a global leader in sustainable and ethical fiber production.
- 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 & size
Fit:
- Loose-fitted
- Chest width (S): 100 cm (39.4″) +/- 5 cm (2″) per size for XS - M, +/- 6 cm (2.4″) per size for L - XXL
- Body length (S): 65 cm (25.6″) +/- 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, CH and the EU.
Free delivery for all orders above 150 USD.
Free gift packaging for all orders above 80USD, simply select the "Dagsmejan premium box" at checkout.

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 |
-
The coolest sleep comfort
-
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!
-
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.
-
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
-
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