A six-step journey — from laboratory insight to real-life comfort.
At Dagsmejan, every collection begins in the lab and ends in better sleep.
Developed in Switzerland with leading universities, textile laboratories, and sleep experts, our innovation process combines scientific research, advanced textile engineering, and independent validation — so you can rest in the knowledge that your sleepwear truly performs.
1. Understanding Our Physiological Sleep Needs
Research & Scientific Insight
We begin by analysing how temperature, moisture, and sensory comfort affect each stage of the sleep cycle. Through partnerships with experts such as Dr. Roy Raymann (Sleep & Thermoregulation) and Dr. Lutz Graumann (Sleep & Recovery), as well as research institutes including HSLU and EMPA, we translate
science into design objectives.
Focus areas: thermoregulation, moisture balance, muscle recovery, and skin health
Validation: reviewed by academic partners to ensure physiological relevance
"There are companies that rush their products to market - and then there's Dagsmejan. I was immediately impressed that they consulted scientific experts in textiles, temperature regulation and sleep before the first stitch was sewn. My PhD investigated links between thermoregulation, sleep and insomnia, and I saw straight away that Dagsmejan sleepwear could balance one's environment with one's body." — Professor Michael Gradisar, Sleep Researcher, Clinical Sleep Psychologist
2. Developing Smart Fabrics & Designs
Textile Innovation Meets Design Engineering
Our scientists and designers co-develop exclusive NATT™ technologies — natural, intelligent fabrics that respond to your body’s needs through the night.
Innovation focus:
- Permanent moisture channels and responsive heat transfer
- Mineral infusions for muscle recovery
- Zinc-enriched fibres for sensitive skin care
Sustainability: renewable fibres (FSC®, PEFC®), ethical sourcing (NATIVA™ merino), low-impact European production
Validation: material and fibre properties confirmed in partner labs before garment testing
3. Laboratory Testing
Objective Proof of Performance
Every fabric undergoes independent lab analyses to measure thermal and moisture performance versus standard textiles. Testing is conducted by EMPA, Hohenstein, and other accredited labs.
Testing methods:
- Flat testing – breathability, moisture transport, drying speed
- Torso testing – simulates body heat and sweat release
- Climate-chamber testing – reproduces night-time temperature and humidity changes
Metrics assessed: heat resistance, evaporative cooling, moisture absorption, breathability
Validation: results benchmarked against cotton and polyester fabrics
Example outcome: NATTCOOL™ proven 8× more breathable and dries in ⅓ the time of cotton (EMPA 2023).
4. Dermatological & Clinical Testing
Safety and Skin Compatibility, Independently Verified
For fabrics with active properties like zinc we commission clinical grade independent dermatological studies.
- Partners: Dermatest GmbH (Germany) and certified European clinics
- Testing types: Patch tests, irritation and sensitivity studies, double-blind comparisons
- Results: NATTSENSITIVE™ rated “Excellent” for skin tolerance and regeneration
Validation: Compliant with EU Cosmetic Regulation and REACH standards
“ Sensitive skin is a nuisance during the day, but it can become a menace during the night when blood flow in our skin is increasing and irritations are seriously disturbing our sleep quality. Dagsmejan has developed a new kind of sleepwear that is helping to sooth skin irritation while we sleep. The benefits of the NATTSENSITIVE™ sleepwear have been confirmed in a dermatological application study by Dermatest. This is why I can highly recommend those products.” — Dr. med. Werner Voss— Specialist in Dermatology
5. Wear & Fit Testing
Real People. Real Sleep.
Performance in the lab is only part of the story — the true test happens in bed.
We conduct multi-week wear trials across age groups, body shapes, and climates to guarantee all-night comfort.
What we test:
- Comfort perception and temperature stability
- Sweat control and moisture distribution
- Fabric softness, stretch recovery, and seam comfort
Validation: participant feedback and biometric data feed directly into design refinements before final production.
“We don’t just test fabrics — we test sleep.”
6. Independent Quality Assurance & Certifications
Trusted by Science. Verified by Standards.
Before reaching you, every Dagsmejan garment is reviewed by internal specialists and independent quality institutes to ensure performance, purity, and sustainability.
Certifications:
- OEKO-TEX® Standard 100 – certified skin-safe
- bluesign® – responsible production
- FSC® / PEFC® – renewable wood sources
- NATIVA™ – traceable, mulesing-free merino
Validation: testing for color fastness & shrinkage. Control of garment quality, seams and fabric.
Every Dagsmejan garment is certified safe for you — and sustainable for the planet.
Experience Dagsmejan for yourself
Words and test results can only tell so much. The true proof is how it feels on your skin and how it transforms your sleep. Try Dagsmejan for yourself and discover independent science in action—sleepwear designed to keep you comfortable, cool, and fully rested, night after night.
Verified customer reviews
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★★★★★
This sleepwear changed my life!!
So comfortable and soft, fits great, very stylish. Keeps me from sleeping hot and cold with it's technology.
— Dianne —
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★★★★★
Best pajamas
This merino pajamas keep what the seller promises. It is a wonderful feeling to sleep in and it balances the temperature. Not too cold and not too warm. Fantastic !!!
— Thomas —
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★★★★★
Softest women's pajamas
This sleep dress is fantastic. No itchy seams, no scratchy tags, the softest women's pajamas that breathes and keeps me warm. Perfect for night sweats or extreme cold.
— Amy —
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★★★★★
The best pajamas in the world
This merino pajamas keep what the seller promises. It is a wonderful feeling to sleep in and it balances the temperature. Not too cold and not too warm. Fantastic !!!
— Thomas —
