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Nightfall Sheet Sets shown in stack #choose-your-color_cloud-whiteCooling
Fix 01 · Runs Hot

Sleep cooler with Nightfall

Nightfall Sheet Set

$289.00

If you're looking for lightweight, breathable sheets for overheating, Nightfall's open-airflow knit releases heat continuously, so the bed stays cool from lights-out to sunrise. Perfect for summer, heat waves, and consistently warm climates. Comes with 1 flat sheet, 1 fitted sheet, and 2 pillowcases (Twin/Twin XL includes 1 pillowcase). See size chart.

  • Lightweight, breathable airflow knit
  • Continuous heat release, not just a cool first touch
  • Built for summer, heat waves, and warm climates
  • Keeps the whole bed at one cool, consistent temperature
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Fabric & Care

Fabric: 90% Cooling Nylon/10% Spandex. Machine wash cold before use. Wash dark colors separately. Do not bleach. No dryer sheets or fabric softener. Tumble dry low. Remove immediately. Do not iron. Do not dry clean.

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ARCTIC AIRE•MAX Sheet Set Stack shown in White #choose-your-color_whiteHypoallergenic
Fix 02 · Night Sweats

Enjoy cool, dry sleep with Arctic Aire•MAX

Arctic Aire•MAX Sheet Set

$249.00

If you're looking for a sheet set that feels familiar to your favorite pair, Arctic Aire•MAX delivers. TENCEL™ Lyocell pulls moisture off the skin and dries faster than traditional cotton, so night sweats never soak in and sheets never feel clammy. Customers report relief during heat waves and hormonal sweating. Comes with 1 flat sheet, 1 fitted sheet, and 2 pillowcases (Twin/Twin XL includes 1 pillowcase). See size chart.

  • Hypoallergenic, sustainably sourced eucalyptus-based fibers
  • Dries quickly so damp sheets don't linger
  • Naturally breathable and moisture wicking
  • Silky hand-feel that softens further with each wash
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In stock, ships within 24 hours.

FABRIC & CARE

Fabric: 300 thread count woven sateen made from 100% TENCEL® Lyocell. Machine wash cold before use. Wash dark colors separately. Do not bleach. No dryer sheets or fabric softener. Tumble dry low. Remove immediately. Warm iron if desired. Do not dry clean.

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Bright White Original Performance Sheet Set Stack #choose-your-color_bright-whiteTemperature Regulating
Fix 03 · Temperature Shifts

Balance every temperature with Original Performance

Original Performance Sheet Set

$249.00

If you're looking for year-round comfort, Original Performance was designed as a breathable layer of defense against hot flashes, perimenopause or other temperature fluctuations. Comes with 1 flat sheet, 1 fitted sheet, and 2 pillowcases (Twin/Twin XL includes 1 pillowcase). See size chart.

  • Adapts to temperature shifts and hormonal overheating
  • Stays dry through the chill that follows a hot flash
  • 4-way stretch fits deep mattresses (Purple, Tempur-Pedic, and most foam mattresses)
  • Year-round comfort—never too warm, never too cool
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In stock, ships within 24 hours.

FABRIC & CARE

Fabric: 87% Performance Polyester / 13% Spandex. Machine was cold before use. Wash dark colors separately. Do not use bleach. No dryer sheets or fabric softener. Tumble dry only and remove immediately. Do not dry. Do not dry clean.

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Active Comfort Sheet Set shown in stack #choose-your-color_pewterMoisture Wicking
Fix 04 · Everyday Cooling

Sleep comfortably through the night with Active Comfort

Active Comfort Sheet Set

$139.00

If you're comfortable when you fall asleep but wake up feeling too warm, the Active Comfort Sheet Set helps regulate your sleep environment throughout the night. Its breathable, moisture-wicking fabric releases excess heat as your body temperature changes, so you can stay asleep longer and wake up feeling refreshed. Comes with 1 flat sheet, 1 fitted sheet, and 2 pillowcases (Twin/Twin XL includes 1 pillowcase). See size chart.

  • Helps prevent overheating that interrupts your sleep
  • Breathable fabric releases excess heat throughout the night
  • Moisture-wicking comfort keeps you dry without feeling cold
  • Soft, lightweight stretch fabric fits deep mattresses securely
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1

In stock, ships within 24 hours.

FABRIC & CARE

Fabric: 88% performance polyester, 12% spandex. Machine wash cold before use. Wash dark colors separately. Do not bleach. No dryer sheets or fabric softener. Tumble dry low. Remove immediately. Do not iron. Do not dry clean.

★★★★★
30,000+ Reviews
Cooling Performance
Engineered fabric
Free Shipping
ON ORDERS $150+
60-Night Guarantee
Sleep on it, risk-free
Compare the Collection
Find the right sheet for your kind of hot.
Four sheet sets. Four different cooling jobs. Here's how they stack up side by side.
Nightfall Shop → Arctic Aire•MAX Shop → Original Performance Shop → Active Comfort Shop →
Best forRuns hot / heat wavesNight sweats & allergensTemp shifts & hot flashesWaking up warm at night
FabricAirflow performance knitTENCEL™ Lyocell4-way stretch performance knitBreathable stretch knit
FeelBreezy, airySoft, dryBalanced, year-roundSoft, everyday
WeightLightLight-mediumMediumLight-medium
Cool-to-touch
Heat release
Moisture wicking
PriceFrom $249From $249From $249From $139
Why SHEEX Works
The Four Corners of Great Bedding
Comfort
  • Buttery hand-feel
  • 4-way stretch fit
  • Deep-pocket tailoring
Hygiene
  • Quick-drying weave
  • Odor-resistant
  • Machine wash + tumble dry
Folded SHEEX performance sheets
Temperature
  • Airflow knit
  • Moisture-wicking fibers
  • Consistent surface temp
Style
  • Editorial color range
  • Matte, refined finish
  • Tailored, clean lines
17,000+ Five-Star Reviews
As told by the Dreamers:
ORIGINAL PERFORMANCE
ORIGINAL PERFORMANCE
“These are the best sheets of my life! I had a set for 8 years that I loved and finally bought a new set and they feel so good and fresh! They really last a long time thru many washes but it’s good to have a brand new set. I feel nice and cool all night long and don’t wake up all sweaty I love it! Highly recommend to anyone looking at this review just do yourself a favor and get them already!!!”
Nightfall
Nightfall
“I got an early release of these sheets from the product development and marketing team at SHEEX and let me tell you honestly --- OMG, AMAZING!! OH SO SOFT, OH SO COOL - YET COZY! My husband and I look forward to sliding between these new Nightfall sheets every evening! Maybe my new favorite product from you all?”
ACTIVE COMFORT
ACTIVE COMFORT
“My 5th set purchased in last 5 years. Started with them on my king bed, built a 2nd home, and put them on 2 queen beds there. Bought a set for my mom, and just bought new set for my Queen. Unbelievably comfy. Expensive; but for quality rest, I guess who cares.”
Arctic AIRE•MAX
Arctic AIRE•MAX
“This is the second time we have bought this set in five years. It is durable, so soft, and stays on the mattress pretty well. Great for hot and cold sleepers alike. Highly recommend!”
ORIGINAL PERFORMANCE
ORIGINAL PERFORMANCE
“Bought our first set 5 years ago. Will never buy cotton again. Stay cool and dry all night, cleans easy. Dexter likes them too.”
NIGHTFALL
NIGHTFALL
“Literally the best sheets I’ve ever owned in my entire life! I am pre menopausal and have a hard time regulating my body temperature at night. . I’ve tried SO MANY sheets! These are THAT GIRLLL! Trust me. . just get them! They wash & dry beautifully as well!”
SHEEX founder
Founder Story
“We knew performance fabric could cool a body in motion. We wanted to replicate that feeling for rest.”
After years working with the moisture-wicking, heat-releasing fabrics used in elite athletic gear, we saw the same problem in the bedroom: cotton sheets trap heat and hold sweat. So we rebuilt the sheet from the fiber up, engineering bedding that breathes, wicks, and regulates temperature all night long.
The result is a sleep surface that stays cool when you run hot, dries fast when you sweat, and helps you stay asleep through every temperature shift.
Susan & Michelle, Founders
FAQs
Questions, answered honestly.
How do SHEEX® cooling sheets actually keep you cool?

SHEEX® cooling sheets are made with our performance knit fabric, which is engineered to wick moisture away from your skin and disperse it across a larger surface area. This helps heat and sweat evaporate more quickly than traditional cotton sheets, creating a cooler, drier, and more comfortable sleep environment throughout the night.

What is the SHEEX® 60-Night Sleep Guarantee?

Try your SHEEX® sheets for 60 nights, risk-free. If they aren't the most comfortable sheets you've ever owned, simply return them within the trial period for a refund. No questions asked.

Do SHEEX® sheets stay soft after washing?

Yes. Unlike traditional cotton sheets that can wear down over time, SHEEX® performance fabrics are designed to maintain their softness, stretch, and shape wash after wash. For best results, machine wash cold and tumble dry on low heat.

Will SHEEX® fitted sheets fit a deep mattress?

Yes. SHEEX® fitted sheets are designed with deep pockets and stretch to fit mattresses up to 18 inches deep, including pillow-top, memory foam, hybrid mattresses and adjustable bases.

What's the difference between the SHEEX® sheet collections?

Each SHEEX® sheet collection is designed with a unique fabric and feel to meet different sleep preferences. Whether you're looking for maximum cooling, an ultra-soft feel, or elevated luxury, there's a SHEEX® collection for you. View our comparison chart to compare features and find the best cooling sheet set for your sleep style.

A calming bedroom at twilight
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