The bed that holds you.
Soft, supportive borders turn any mattress into a cushioned cocoon — so your body relaxes, your mind slows down, and sleep finally comes easy.
The Plumo Cocoon™
The world's first fitted sheet with soft, supportive borders.
- Built-in comfort borders hug you into a calmer, more restful position
- Ultra-soft fabric that stays in place all night
- Free sleep mask + pillow mist while supplies last
Twin XL – California King · White or Black · Ships in 1–2 business days
Comfort you can feel
the moment you lie down.
Every detail exists for one reason: to help you feel surrounded, calm, and deeply rested.
Soft, supportive borders
Plush foam borders rise gently around you, turning an open mattress into a cushioned nest that feels held — not confined.
Calms a busy mind
Less open space means fewer restless thoughts. Light sleepers and anxious minds settle faster when the body feels surrounded.
Stays put all night
Zips at every corner keep the sheet and borders exactly where you left them. No slipping, no bunching, no 3 a.m. fixing.
Breathable & washable
Ultra-soft fabric that breathes, with a cover you can unzip and machine wash. Cozy without the overheating.
Open beds keep busy minds awake.
Most of us sleep on a flat, open surface and wonder why we can't switch off. The body reads open space as exposure — and stays alert.
The Plumo Cocoon™ wraps soft, padded borders around a fitted sheet, creating a gentle enclosure that tells your nervous system it's safe to let go. Think of it as the pillow fort you built as a kid — grown up, and made beautifully.
- Plush foam borders on every side
- Ultra-soft, breathable fabric
- Zips on so it never slips
On your bed in four easy steps.
It arrives compressed, expands within hours, and zips onto your mattress like a fitted sheet.
- 1
Unbox & let it expand
Open carefully and give the foam borders a few hours to reach their full, plush shape.
- 2
Place on your mattress
Lay the Cocoon on your bed like a fitted sheet, borders facing up.
- 3
Line up & zip the sides
Slide each foam insert along its side and zip it closed.
- 4
Zip the corners & sink in
Close each corner, add your favourite sheet on top, and settle into the nest.
It started with a nest of pillows.
As a teenager, bedtime was the hardest part of my day. Every night I built a wall of pillows around me — it was the only way I felt comfortable enough to fall asleep.
Years later that small ritual became the Plumo Cocoon™, and a simple mission: to help people feel secure, quiet the mind, and sleep more deeply. Plumo is building the future of comfort for a world that struggles to slow down.
— Kaitlin, founder
Loved by 1,850+ people
who finally feel held.
Total game changer
As someone with anxiety, it makes me feel safe and snug. Works great with adjustable beds and my BedJet. Even my dogs love it!
Changed my sleep for the better
I am AuDHD and this has been such a great purchase. It has changed my sleeping for the better.
Elevated my sleep
Amazing — it definitely improved and elevated my sleep experience! Very cozy and easy to assemble.
Cozy and enjoyable
Makes sleeping cozy and enjoyable. Take your time zipping every side on set-up day — once it's on, it's worth it.
My own adult-size nest
I love it so much! It's like having my own adult-size dog bed — in the best possible way.
Feels like a hug
The borders make the whole bed feel like a hug. I fall asleep faster and don't wake up feeling exposed anymore.
At home in the Cocoon.
Everything you're wondering.
What is the Plumo Cocoon™ made of?+
The shell is 100% polyester with an ultra-soft finish; the borders are filled with 100% polyurethane foam. Both are designed to stay soft and supportive wash after wash.
How do I wash it?+
Unzip the cover and machine wash cold on a gentle cycle with mild detergent. Air dry for best results (tumble dry low if needed). Do not bleach, iron, or dry clean.
Can I use my own sheets on top?+
Yes. Lay your favourite sheet over the Cocoon and tuck it into the corners and beneath the borders — it works beautifully with what you already own.
Will it fit my mattress?+
The Cocoon comes in Twin XL, Full, Queen, King and California King and fits mattresses up to 14" deep. See the size guide above for exact dimensions.
When will my order arrive?+
In-stock orders ship within 1–2 business days and typically arrive in 3–7 business days within the US. You'll receive tracking by email the moment it ships.
Your calmest night starts tonight.
Join thousands of sleepers who finally feel held. Free US shipping, 30-night returns, and a bundle gift while it lasts.
Shop the CocoonSecure checkout · Ships in 1–2 business days · Cancel any time before it ships