Think about the moment you pull on your pajamas at the end of the day — that first contact with something soft enough to exhale into. That feeling isn't accidental. The fabric your sleepwear is made from shapes how it feels: against your skin, through the night and wash after wash. This sleepwear fabric guide is your considered look at the materials that matter most — Modal, silk, cotton, linen, and synthetics — so you can make a choice that genuinely works for your body, your sleep, and your life at home. After 30 years designing sleepwear, we know the fabric matters most, and that the right one feels different from everything else.
What Makes a Fabric Good for Sleepwear?
Four qualities are worth looking at when you choose a sleepwear fabric:
Breathability
Your core body temperature starts to drop about two hours before you fall asleep. That nightly cool-down is one reason breathability is worth looking for in what you sleep in.
Moisture
A warm room can leave you feeling damp by morning. Lenzing notes that the structure of TENCEL™ Modal fibers allows the absorption and release of moisture, supporting a drier microclimate on the skin.
Softness and Skin Comfort
Sleep means prolonged, uninterrupted contact between fabric and skin. That makes a smooth, soft hand one of the first things to feel for.
Durability Through Washing
Sleepwear is washed often. Look for a fabric made to hold up to frequent washing: Lenzing notes that TENCEL™ Modal fibers are made to withstand repeated washing and drying cycles.
What Is Modal Fabric and Why Is It So Popular for Pajamas?
Modal is a cellulose fiber made from wood; TENCEL™ Modal uses wood sourced from responsibly managed forests. TENCEL™ Modal is the branded modal fiber made by Lenzing AG. Lenzing reports that TENCEL™ Modal is produced with high recovery rates of chemicals, and with carbon emissions and water consumption at least 50% lower than generic modal fibers.
Why Modal Works So Well for Sleepwear
- Exceptional softness. TENCEL™ Modal has a smooth, buttery soft hand that feels silky against skin; Lenzing notes its fiber cross-section and tenacity favor fabric softness.
- Moisture management. Lenzing notes that TENCEL™ Modal fibers allow the absorption and release of moisture, and Eberjey describes its Gisele TENCEL™ Modal as a breathable, temperature-regulating knit.
- Shape retention. TENCEL™ Modal fibers are made to withstand repeated washing and drying cycles.
Eberjey's Gisele TENCEL™ Modal Long PJ Set — with more than 1,400 five-star reviews — is the brand's signature TENCEL™ Modal sleepwear. The fabric is verified by OEKO-TEX® Standard 100, meaning it's dyed with safe and non-toxic dyes.
How Does Silk Compare to Modal and Cotton for Sleep?
Silk is a classic sleepwear fabric, and it still earns its place. Mulberry silk is a natural protein fiber from the cocoons of the silkworm Bombyx mori, made up mainly of two proteins, fibroin and sericin. Eberjey's Washable Silk is 100% mulberry silk.
The Case for Silk
Silk's smooth surface is a big part of why so many people love it for sleep. Eberjey describes its Inez Washable Silk as hypoallergenic and thermoregulating, offering comfort year-round. Eberjey's Washable Silk collection is engineered to be machine washable on a delicate cycle, addressing one of silk's historic drawbacks.
Where Silk Falls Short
- Care requirements. Even washable silk asks for attention: cold water, a delicate cycle, washed separately and laid flat to dry.
- Cost. A well-made silk pajama set is an investment: Eberjey's Inez Washable Silk Long PJ Set is $298.
- Ethical considerations. Conventional silk production involves silkworm cocoons. Some prefer plant-based alternatives like Modal for this reason.
The verdict: Silk is worth it for those who prioritize a specific tactile experience and skin-surface smoothness. For everyday wear, machine washing and tumble drying, Modal is often the easier choice.
Is Cotton a Good Choice for Sleepwear?
Cotton is a familiar natural fiber for sleepwear, and the type of cotton and how it is made into fabric change how it feels.
Cotton Options for Pajamas
- Pima / Supima Cotton: Extra-long staple cotton. Supima says its American-grown extra-long staple fiber makes Supima cotton inherently softer and twice as strong as regular cotton. Eberjey uses Organic Pima Cotton in select pajama sets, and Pima cotton in its Pima Stretch Cotton intimates.
- Flannel: Eberjey's Flannel Long PJ Set in Tartan Plaid is 100% cotton, brushed for softness; other Flannel Long PJ Set styles are 50% organic cotton and 50% modacrylic.
Cotton absorbs moisture and tends to hold onto it. Pima cotton is a soft natural-fiber alternative to Modal.
What About Linen, Bamboo, and Synthetic Fabrics?
Linen
Linen is a natural fiber. Eberjey's Organic Linen Knit High Waisted Pant is made from 100% linen, a breathable fabric verified by OEKO-TEX® Standard 100.
Bamboo
According to the U.S. Federal Trade Commission, most, if not all, "bamboo" textiles are really rayon, which is typically made using environmentally toxic chemicals. Check the label for the actual fiber, such as "rayon made from bamboo."
Synthetic Fabrics (Polyester, Nylon, Satin Blends)
Check the label for fiber content: polyester and nylon are synthetic fibers, and satin is a weave that can be made from different fibers. If you would rather sleep in a fiber made from wood, TENCEL™ Modal is one option; Lenzing notes that its fibers allow the absorption and release of moisture.
Which Sleepwear Fabric Is Right for Sensitive or Reactive Skin?
If your skin is sensitive, start with this:
- OEKO-TEX Standard 100 certification: A label for textiles tested for harmful substances, with every thread, button and accessory tested against a list of more than 1,000 harmful substances. Eberjey's Gisele TENCEL™ Modal Long PJ Set carries this certification.
If you have a skin condition such as eczema, ask your dermatologist which fabrics they recommend. Eberjey describes its Inez Washable Silk as hypoallergenic.
How Should You Care for Sleepwear Fabrics to Make Them Last?
Modal: Turn inside out, machine wash cold with like colors on a gentle cycle, and use only non-chlorine bleach when needed. Tumble dry low, and warm iron if necessary.
Silk: For Eberjey's Washable Silk, hand wash or machine wash cold on a delicate cycle, separately, ideally in a mesh wash bag. Remove promptly, lay flat to dry, and do not bleach.
Cotton: For Eberjey's Organic Pima Cotton sets, turn inside out, machine wash cold with like colors on a gentle cycle, remove promptly and tumble dry low. Linen: Eberjey's organic linen pieces call for a cold wash on a gentle cycle and line drying.
Following the care label is the simplest way to look after the feel and drape of a Modal or silk set.
Quick Comparison: Sleepwear Fabrics at a Glance
| Fabric | Eberjey example | Fiber content | Care label |
|---|---|---|---|
| TENCEL™ Modal | Gisele TENCEL™ Modal Long PJ Set | 95% LENZING TENCEL™ Modal, 5% Elastane | Machine wash cold, gentle cycle; tumble dry low |
| Washable Silk | Inez Washable Silk Long PJ Set | 100% mulberry silk | Hand or machine wash cold, delicate cycle; lay flat to dry |
| Organic Pima Cotton | Organic Pima Cotton Long PJ Set | 100% Organic Pima Cotton | Machine wash cold, gentle cycle; tumble dry low |
| Linen | Organic Linen Knit High Waisted Pant | 100% Organic Linen | Machine wash cold, gentle cycle; line dry |
The Softer Side of Choosing Well
The right sleepwear fabric is the one that works with your body — your temperature, your skin, the climate you wake up in, and the values you hold. For everyday wear, TENCEL™ Modal is an easy place to start: Gisele TENCEL™ Modal is buttery soft, breathable and machine washable, and Eberjey describes the knit as temperature-regulating. Silk earns its place for those who prize that particular smooth-surface closeness. Pima cotton remains a soft, natural-fiber choice. Whatever fabric you settle into, look for OEKO-TEX Standard 100 certification, prioritize drape and fit alongside fiber content, and care for your pieces with intention. What you sleep in is a quiet, daily act of care — and it deserves to be chosen thoughtfully.
Frequently asked questions
What is the best fabric for sleepwear?
It depends on how you sleep. TENCEL™ Modal is a buttery soft, breathable, temperature-regulating choice for everyday wear, and Inez Washable Silk, which Eberjey describes as hypoallergenic and thermoregulating, suits those who love a smooth hand. Pima cotton and linen are breathable natural options.
Is Modal fabric good for pajamas?
Yes. TENCEL™ Modal is made from wood sourced from responsibly managed forests, and its fibers are made to withstand repeated washing and drying. Eberjey's Gisele sets pair it with a touch of elastane for a soft, drapey knit that is machine washable.
Is silk or Modal better for sleepwear?
Both are lovely, for different reasons. Silk has a very smooth surface, while TENCEL™ Modal is a soft, easy-care knit for everyday wear. Many people keep a Modal set for most nights and a Washable Silk set for when they want something more elevated.
What does OEKO-TEX Standard 100 mean on pajamas?
OEKO-TEX® Standard 100 is a label for textiles tested for harmful substances, with every thread, button and accessory tested against a list of more than 1,000 harmful substances. Eberjey's Gisele TENCEL™ Modal Long PJ Set and Inez Washable Silk Long PJ Set are verified by OEKO-TEX® Standard 100.
How do I care for Modal pajamas to make them last?
Turn them inside out and machine wash cold with like colors on a gentle cycle. Use non-chlorine bleach only, tumble dry low, and warm iron if needed.
Sources
- Sleep Foundation, “The Best Temperature for Sleep”
- Lenzing, “TENCEL™ Modal”
- Lenzing (TENCEL™), “TENCEL™ Modal fiber claims snapshot, October 2024” (PDF)
- Caspian Journal of Environmental Sciences, “The silk proteins, sericin and fibroin in silkworm, Bombyx mori Linn. – a review”
- Supima, “World’s Finest Cottons: Brand Guidelines” (PDF)
- U.S. Federal Trade Commission, “How to Avoid Bamboozling Your Customers”
- OEKO-TEX®, “OEKO-TEX® STANDARD 100”
