Summer Sale · 50% off Lyocell BeddingClaim offer

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SLEEP & HEALTH

You're Sleeping Under Plastic Eight Hours a Night — and Nobody Told You

Most "soft" bedding sold today is polyester — the same polymer as a water bottle, woven fine and renamed microfiber. Here's what that means for your sleep, and the plant-grown fibre replacing it.

8 hours a night⅓ of your life0% plastic — Lyocell
See the summer sale

By the Yuki Sleep editorial team · July 2026 · 4 min read

Pull the care label out of your duvet cover tonight. If it says polyester, microfiber or "easy-care blend", the fabric against your skin is a plastic — polyethylene terephthalate, the same polymer used for drink bottles, drawn into fine thread and given a softer name.

Most people never think about it. Bedding is bought for the photo and the price, sealed in plastic wrap, and the label is never read again. Yet you spend around eight hours a night — a third of your life — wrapped in it.

A third of your life is spent wrapped in fabric. Few people ever ask what that fabric is made of.

Synthetic textiles don't stay perfectly inert. Studies have found that polyester fabrics shed microplastic fibres as they're used and washed — one of the largest sources of microplastic in household dust and laundry water. Many "easy-care" and wrinkle-free finishes add formaldehyde-based resins on top. All of it sits directly against your skin, in a warm bed, night after night.

Plastic also simply sleeps badly. Polyester doesn't breathe and doesn't absorb moisture, so heat and sweat have nowhere to go. If you regularly wake up damp and overheated under "hotel-style" bedding, the fibre is the reason.

THEN THERE IS LYOCELL

Grown, not synthesised.

Lyocell is spun from the pulp of responsibly grown eucalyptus — a botanical fibre, not a petroleum product. Made in a closed loop that recovers ~99% of its solvent, certified OEKO-TEX 100, and completely plastic-free. It's the fibre Yuki Sleep builds its bedding on.

Cool to the touch, all night

THE HAND

Cool to the touch, all night

Lyocell draws moisture off the skin and releases it fast, then breathes to hold an even temperature until morning. A silk-smooth surface with a heavy, fluid drape — softness from the fibre, not from a chemical finish.

50%more moisture wicked than cotton

From a tree, not a barrel

THE ORIGIN

From a tree, not a barrel

Every Yuki fibre starts as FSC-certified eucalyptus. It's spun in a closed loop that recovers ~99% of its solvent, certified OEKO-TEX 100, and finished with nothing synthetic — from fibre to plastic-free packaging.

99%of solvent recovered — closed loop

THE CASE FOR SWITCHING

Seven reasons sleepers are leaving synthetic bedding behind

  1. 01

    It sleeps cooler

    Lyocell breathes and regulates temperature through the night. Polyester traps heat; eucalyptus fibre releases it. Made for warm sleepers and summer months.

  2. 02

    It stays dry

    Lyocell wicks roughly 50% more moisture than cotton and releases it fast — no more waking up damp at 3 a.m.

  3. 03

    Nothing petroleum-born touches your skin

    No synthetic fibres, no microplastic shedding, no wrinkle-resin finishes. A plant fibre, certified OEKO-TEX 100.

  4. 04

    Kinder to sensitive skin

    A dry, smooth surface gives dust mites, bacteria and odour far less to hold onto — the reason sensitive and allergy-prone sleepers switch first.

  5. 05

    Silk-smooth from the first night

    A cool, fluid drape that needs no breaking in. Softness that comes from the fibre, not from a chemical finish.

  6. 06

    Grown, not synthesised

    Spun from FSC-certified eucalyptus in a closed loop that recovers ~99% of its solvent. Plastic-free from fibre to packaging.

  7. 07

    Made to last

    Strong wet and dry, so it keeps its drape and softness wash after wash — while polyester pills and holds odour.

The quietest thing in the room should be the thing you sleep in. YUKI SLEEP · 夢

SIDE BY SIDE

Polyester and Lyocell, honestly.

Polyester "hotel" bedding YUKI Lyocell
What it is Petroleum-based plastic fibre (PET) Botanical fibre from eucalyptus pulp
Breathability Traps heat against the body Breathes and regulates all night
Moisture Repels sweat — stays clammy Wicks ~50% more than cotton, dries fast
Against your skin Microplastic shedding, resin finishes OEKO-TEX 100 certified, nothing synthetic
Planet Made from oil, sheds plastic in every wash FSC eucalyptus, closed-loop, ~99% solvent recovered
8h against your skin, every night
50% more moisture wicked than cotton
99% solvent recovered — closed loop
0 synthetic fibres, ever
SageSUMMER SALE · −50%

THE SUMMER SALE

The Lyocell Bedding Set

Duvet cover, flat sheet and pillowcases in 100% botanical Lyocell. For the summer sale, the full set is half price — while stock lasts.

£232.00£94.0050% off · summer sale

  • 100% botanical Lyocell — zero synthetics
  • Sleeps cooler & wicks ~50% more moisture than cotton
  • OEKO-TEX 100 certified
  • 30-night trial · free returns
Claim 50% off

Offer valid while summer stock lasts. No code needed — discount applied on the product page.

WHAT SLEEPERS SAY

"First bedding I don't wake up sweating under. The difference was obvious the first night."
Emma V.Verified buyer · Amsterdam
"I checked our old duvet cover after reading about microfiber — 100% polyester. Never again. The Lyocell set feels like a cool hotel bed, without the plastic."
Daan K.Verified buyer · Utrecht
"My skin is reactive to almost everything. Three weeks on these sheets, zero irritation. And they look beautiful unironed."
Sofia M.Verified buyer · Antwerp

Questions, answered

Is Lyocell really plastic-free?

Yes. Lyocell is a cellulose fibre made from eucalyptus wood pulp. There is no polyester, nylon or any petroleum-derived fibre in Yuki bedding — certified OEKO-TEX 100.

How is it different from cotton?

Cotton is also natural, but Lyocell wicks around 50% more moisture, dries faster and feels noticeably smoother — closer to silk than to percale. It's also gentler on the planet: closed-loop production recovers ~99% of the solvent used.

How do I claim the 50% summer sale?

No code needed. The discount is already applied on the product page — add your size to the cart and the sale price is what you pay.

What if I don't feel the difference?

Sleep on it for 30 nights. If it doesn't sleep cooler and calmer than what you had, send it back — free returns, full refund.

Nothing between you and rest.

Trade plastic for a plant. 50% off Lyocell bedding for the summer sale — free returns if it doesn't sleep cooler.

Claim 50% off

100% botanical Lyocell · OEKO-TEX 100 · closed-loop production · plastic-free packaging

© 2026 Yuki Sleep · yukisleep.com
Lyocell Bedding Set · −50%£232.00£94.00
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