The best cooling pajama fabrics in 2026 - cotton, linen, silk, TENCEL, and bamboo viscose - with tradeoffs, fabrics to avoid, and how to pick the right one for night sweats, sensitive skin, or hot summers.
Banner Mattress is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you. Recommendations are based on hands-on testing and editorial review.
If you wake up sweating in the middle of the night, your sheets are usually the first thing you blame - but what you sleep in matters just as much. The right pajama fabric pulls moisture off your skin, lets warm air escape, and keeps your skin temperature in the narrow band where deep sleep actually happens. The wrong fabric traps both heat and sweat, and you'll feel it by 3 a.m.
Below is what current sleep-product reviewers actually recommend in 2026, why each fabric works, and the tradeoffs nobody puts on the label.
A fabric keeps you cool through three properties that work together:
Heavy synthetics like polyester and fleece fail on all three: they trap air, repel moisture instead of moving it, and hold heat. That's why almost every editorial guide (CNET, Sleep Foundation, Eberjey) recommends the same short list of natural and plant-based fibers.
Cotton is the default cooling fabric for a reason - it's breathable, soft, moisture-absorbent, and forgiving on sensitive skin. Look for lighter weaves: cotton voile, cotton gauze, and percale sleep cooler than jersey-knit cotton, which can feel warm and clingy when damp.
Pima and Supima cotton are long-staple varieties with finer fibers and better moisture-wicking than standard cotton - softer against the skin and more durable through repeated hot washes.
Linen - woven from flax - has been the summer fabric of choice for thousands of years. The loose, hollow weave lets warm air escape quickly, and the relatively stiff fibers don't cling to damp skin the way cotton can.
Silk is a temperature regulator more than a pure cooling fabric - it keeps you cool in summer and warm in winter by sitting in equilibrium with your body. The fibers are naturally hollow, lightweight, and remarkably moisture-wicking for something this smooth.
TENCEL is the trade name for lyocell, a fiber made from sustainably-grown wood pulp (usually eucalyptus). It's technically a regenerated cellulose fiber - natural origins, engineered for performance. It moves moisture roughly 50% faster than cotton, feels silky on the skin, and resists the bacterial growth that causes laundered-pajama odor.
Bamboo viscose is rayon made from bamboo cellulose. Like TENCEL, it's a regenerated cellulose fiber - but the process is different and the feel is closer to a soft jersey knit. It's a favorite for menopause and night sweats because the fabric stays cool to the touch even when slightly damp.
Polyester - Synthetic fibers trap moisture and heat against the skin
Flannel - Brushed fiber surface is designed to retain warmth - winter only
Fleece - Same as flannel, plus much lower breathability
Heavy jersey knits - Even cotton jersey can sleep warm when the fabric is dense
Satin (polyester version) - Mimics silk's feel but without the breathability
You sleep slightly warm. Start with lightweight cotton voile, percale, or a Pima blend. It's the cheapest test and works for most people.
You sleep very hot or have night sweats. Move to TENCEL/lyocell or bamboo viscose - both wick moisture faster than cotton and stay cool to the touch.
You're a hot sleeper *and* have sensitive skin. Mulberry silk or TENCEL - both are smooth, hypoallergenic, and don't grip damp skin.
You sweat heavily / menopausal night sweats. Bamboo viscose or moisture-engineered sleepwear lines (Cozy Earth, Dagsmejan, Slumber Cloud) consistently show up across Sleep Foundation's and similar guides for this use case.
You want a low-effort, affordable option. Cotton voile or percale. Easy to wash, easy to replace, doesn't demand a hand-wash routine.
There is no one best fabric for everyone, but the most consistent picks across sleep-product editorial guides are TENCEL/lyocell, bamboo viscose, and lightweight cotton (voile or percale weave). TENCEL and bamboo viscose wick moisture faster than standard cotton, which is why they tend to win for heavy sweaters and menopausal night sweats. For most hot sleepers, lightweight cotton is still the cheapest, easiest-to-care-for starting point.
Silk and lightweight cotton both sleep cool, but they work differently. Silk is a temperature regulator - it stays roughly in equilibrium with your skin, so it feels cool in summer and warm in winter. Lightweight cotton is more breathable and absorbs moisture, but the absorbed sweat can feel heavy by morning in humid weather. If you sleep hot in a dry climate, lightweight cotton is fine. In humid heat or with night sweats, silk, TENCEL, or bamboo viscose handle moisture better.
Yes, in most lab-tested comparisons bamboo viscose moves moisture off the skin faster than standard cotton and feels cooler to the touch even when slightly damp. The catch is that not every product labeled bamboo is true bamboo viscose - look for fabric content that says viscose from bamboo or lyocell from bamboo on the label.
Avoid polyester, fleece, flannel, and heavy jersey knits. These fabrics either trap warm air against your skin or repel moisture instead of wicking it, which is the opposite of what you want for night sweats. Polyester-blend satin pajamas mimic the look of silk but lose almost all of silk's breathability.
They help, but they're only one variable. A cooling fabric will not save you under a polyester comforter, on a heat-retaining memory-foam mattress, or in a bedroom kept above 70 F. Pair cooling pajamas with breathable percale or linen sheets, a cooling-rated mattress topper, and a bedroom temperature in the 65 to 68 F range for the strongest effect.
Even the best sleepwear can't fix a heat-retaining mattress. See our picks for the most breathable, temperature-regulating mattresses tested for hot sleepers.
Written by
Banner Mattress EditorialThe Banner Mattress editorial team publishes independent mattress reviews, buying guides, and sleep-health advice. Since 2018 we've tested 1,000+ mattresses and 3,000+ pillows, sheets, and bedding accessories in our review lab - every recommendation is hands-on, never sourced from vendor talking points. Affiliate links may earn us a commission, but never change what we recommend.
Bedding GuidesTSA lets you bring pillows and blankets through security without limits, but whether they count as a personal item depends on the airline. Here's the airline-by-airline breakdown.
Bedding GuidesTrundle bed sizes, mattress thickness limits (6 to 8 inches), and how trundles compare to daybeds, captain's beds, and storage beds - with low-profile mattress picks and floor-space planning.
Bedding GuidesHow to style a gray throw blanket on any bed - five styling techniques, what works in five bedroom styles, the right size for twin through king, and which materials are worth buying.