Can Better Sleepwear Improve Your Sleep?

A Swiss Approach to Performance Sleepwear

Can what you wear to bed really make a difference?

When we think about improving our sleep, we usually focus on habits—going to bed earlier, reducing screen time or creating a calmer bedtime routine. Some invest in a better mattress or supportive pillows. Few stop to consider what they wear to bed.

Yet sleepwear is part of your sleep environment every single night.

As Dagsmejan celebrates ten years of rethinking sleepwear, we continue to ask the same question that inspired the company from the very beginning:

What if sleepwear were designed around the way the body actually sleeps?

Instead of treating pyjamas as simply another clothing category, we believe they should be engineered around human physiology—helping create the ideal sleep climate throughout the night.

It's an approach rooted in Swiss innovation, where scientific thinking, thoughtful engineering and precision have long been used to improve everyday life. As Switzerland celebrates Swiss National Day on 1 August, it's the perfect moment to reflect on the values that continue to shape everything we create—not simply because Dagsmejan was founded in Switzerland, but because innovation should always begin with understanding people first.

Why does sleepwear matter?

During sleep, your body is constantly working.

Your core body temperature naturally falls as you prepare to sleep, helping signal that it's time to rest. Throughout the night, temperature continues to fluctuate as you move through different sleep stages. At the same time, your body releases heat and moisture into the space between your skin, your sleepwear and your bedding.

When excess heat and humidity become trapped, comfort decreases. Many people wake feeling too warm or restless without realising their sleepwear may be contributing to the problem.

This is where performance sleepwear differs from traditional sleepwear.

Rather than focusing purely on softness or appearance, performance sleepwear is designed to help regulate your sleep temperature by improving breathability, moisture management and overall comfort throughout the night.

Sleepwear won't replace healthy sleep habits—but it can become another tool that helps create better conditions for restorative sleep. To learn more about the role of body temperature during sleep, explore our science-backed guide to better sleep.

A Swiss approach to better sleep

Swiss innovation has never simply been about precision.

It's about asking better questions.

Instead of asking "How can we make better pyjamas?", Dagsmejan asks:

"How can we create better conditions for sleep?"

Every collection begins by understanding a specific sleep challenge—whether that's overheating, changing temperatures throughout the night, post-exercise recovery or supporting skin comfort while you sleep. Only then do we develop the materials and textile technologies needed to address those needs.

Just as importantly, every innovation should be backed by evidence.

That's why Dagsmejan collaborates with leading research institutions and independent textile laboratories, including the Swiss Federal Laboratories for Materials Science and Technology (EMPA) and TESTEX, to better understand how advanced materials perform in relation to breathability, moisture management and thermal comfort.

For us, scientific validation isn't simply about proving a product works.

It's about continually learning how to create an even better night's sleep.

Different sleep needs require different solutions

No two people sleep exactly the same.

Some naturally sleep warm. Others feel cold during the night. Some want to recover after an active day, while others are looking for exceptional softness or support for overnight skin hydration.

That's why we don't believe one fabric—or one collection—can meet everyone's needs.

Instead, each Dagsmejan collection is designed around a different aspect of sleep physiology.

Stay Cool

For warm sleepers or warmer nights, Stay Cool is based on eucalyptus-fibres to help create a cooler, drier sleep environment through exceptional breathability and moisture management.

Balance

Made with naturally soft beechwood fibres, Balance is designed for year-round comfort, helping maintain a balanced sleep climate across changing temperatures.

Stay Warm

Using exceptionally fine merino wool, Stay Warm provides lightweight warmth while remaining breathable, helping you stay comfortably warm without overheating.

Recovery

Designed for active lifestyles, Recovery supports overnight comfort after training, travel or physically demanding days—helping you wake feeling refreshed and ready for what's next.

Night Renew

Developed with Dagsmejan's innovative NATTCOLLAGEN™ technology, Night Renew is designed to support overnight skin hydration while delivering exceptional comfort throughout the night.

Different challenges.

Different solutions.

One philosophy:

Design sleepwear around sleep itself.

Better sleep starts with better thinking

Over the past ten years, our collections have evolved, our technologies have advanced and our understanding of sleep has continued to grow.

But the question that inspired Dagsmejan from the beginning remains the same:

How can sleepwear better support the body's natural processes during sleep?

Whether it's creating a cooler sleep environment, maintaining balanced temperature regulation, providing lightweight warmth, supporting overnight recovery or helping maintain skin hydration while you sleep, every Dagsmejan collection is built around the same belief:

Sleepwear should do more than feel comfortable.

It should work with your body while you sleep.

As we celebrate our tenth anniversary, we're proud of how far we've come—but even more excited about what comes next. Because innovation is never finished. It continues to challenge assumptions, ask better questions and search for new ways to improve everyday life.

After all, if we spend nearly a third of our lives asleep, shouldn't what we wear to bed be designed with the same care as every other piece of performance apparel?

We believe it should.

For us, better sleep has always started with asking better questions.

Explore the Dagsmejan collections to discover performance sleepwear designed around the way the body truly sleeps.

 

Frequently Asked Questions

What is performance sleepwear?

Performance sleepwear is designed around the body's physiological needs during sleep rather than traditional clothing design. By using advanced materials and textile engineering, it helps create a more comfortable sleep environment through improved breathability, moisture management and temperature regulation.

Can sleepwear really improve sleep?

Sleepwear alone won't solve poor sleep, but it can contribute to a more comfortable sleep environment. Breathable, moisture-managing fabrics can help reduce overheating and maintain a more balanced sleep climate throughout the night—supporting the body's natural sleep processes.

Why is temperature regulation important during sleep?

As you prepare for sleep, your core body temperature naturally begins to fall. If excess heat and moisture become trapped, sleep can become less comfortable and more easily disturbed. Sleepwear that helps regulate temperature and manage moisture can support a cooler, drier and more comfortable night's sleep.

Which Dagsmejan collection is right for me?

Stay Cool – For warm sleepers or hot summer nights.

Balance – For year-round comfort and changing temperatures.

Stay Warm – For lightweight warmth without overheating.

Recovery – For active lifestyles and overnight recovery.

Night Renew – To support overnight skin hydration and exceptional comfort.

Explore all collections to find the solution that best matches your individual sleep needs.