100-night trialOEKO-TEX® certifiedPCM cooling techShips in 48 hrsFeatured in Vogue Wellness
NASA-Engineered PCMCollection 01

Engineered for 3am.
Designed so you don't
have to change clothes.

Meet the PCM-infused bamboo sheet set that wicks moisture 3× faster than cotton. OEKO-TEX certified, 400 thread count, cut for your best night's rest — and the hours in between.

Faster wicking
−4.2°
Surface temp
100
Night trial
Sophisticated bedroom with Solène sheets in cool morning light
PCM · ACTIVE LAYER
Absorbs heat at 87°F, releases it at 72°F.
Phase Change Material · originally developed for astronaut gloves.
As featured inVogue WellnessGOOPThe CutARCHITECTURAL DIGESTBon AppétitWSJ · OFF DUTY
§ 01 — The Science

A sheet that reads
your body temperature.

Most "cooling" sheets are polyester with a marketing budget. Solène layers organically-grown bamboo viscose over a micro-encapsulated phase-change core — the same technology NASA uses to stabilize temperature in astronaut gloves. The result is a sheet that actively pulls heat away when you run hot, and stores it until you cool down.

01 / Breathable

Bamboo viscose, woven at 400 thread count.

Naturally porous fibers that move air through the weave all night — softer than silk, crisper than linen, cooler than both.

100% Bamboo400 TC
02 / Wicking

Moves moisture 3× faster than cotton.

Capillary channels in each fiber pull sweat off skin on contact. Measured against a 300TC percale control in independent lab testing.

AATCC 195 tested3.1× vs cotton
03 / Hypoallergenic

Certified clean, from fiber to finish.

OEKO-TEX® Standard 100 and GOTS certified. No synthetic softeners, no formaldehyde finish, no microplastic shedding.

OEKO-TEX®GOTS
Cross-section · The Solène weave
Bamboo sateen · outer layer
PCM micro-capsule core · 0.2mm
Bamboo viscose · wicking mesh
Double-stitched hem · 2cm
§ 01.2 — Temperature regulation

"The PCM layer behaves like a thermal battery. It absorbs excess body heat during the warmest phases of sleep — and releases it slowly as the room cools toward morning."

Dr. Reya Osei · Sleep physiologist, Solène advisor
§ 02 — The Comparison

Solène, beside
the alternatives.

We built this chart using publicly listed specs and our own lab data. Hover any row for the underlying test method.

Cooling technology
Active vs passive
PCM phase-change core
Bamboo viscose only
None
Moisture wicking
AATCC 195, relative
3.1× cotton
1.8× cotton
1.0× (baseline)
Thread count
Sateen weave
400 TC
300 TC
300–400 TC
Certification
Chemical standards
OEKO-TEX® + GOTS
OEKO-TEX®
Varies
Price · Queen
4-piece sheet set
$168
$339
$120–220
Sleep trial
Return window
100 nights
100 nights
30 days typ.
Country of origin
Mill + finishing
Portugal
China
Varies
Sources: manufacturer spec sheets (Jan 2026), Solène internal lab report SLN-24-011.Shop the Night Set →
01
OEKO-TEX® Standard 100
Every fiber tested for 100+ harmful substances.
02
GOTS Certified Organic
Bamboo grown without synthetic pesticides.
03
100-Night Home Trial
Sleep on it for a season. Full refund if it's wrong.
04
Carbon-Neutral Shipping
Offset on every order, at no added cost.
§ 04 — The Evidence

1,284 women,
one fewer wake-up.

Pulled from verified-purchase reviews posted in the last 90 days. Filtered for hot-sleeper and menopause keywords.

Verified Solène reviewer in morning light
Verified review01 / 04
"I haven't woken up soaked in over three months. I used to change pajamas at 3am — now I sleep through. The bamboo feels cool to the touch every time I turn over."
Sarah M.
Hot sleeper, 47
94%
Fewer night sweats
Self-reported, 30-day check-in
88%
Stopped changing pajamas
Among nightly-wakers
4.92
Average rating
1,284 verified reviews
<2%
Return rate
Industry average · 14%
§ 05 — Questions

Things people ask
before their first night.

Visit the help center →

No. The phase-change micro-capsules are woven into the core layer, not applied as a finish. Independent testing shows no measurable degradation after 200 wash cycles.