The Circadian Waterproof Organic Cotton Mattress Protector fitted smooth over a mattress on a wooden bed, with the Handmade in the USA seal and the GOTS label.

Waterproof Organic Cotton Mattress Protector

Twin
$149
Skip to product information
The Circadian Waterproof Organic Cotton Mattress Protector fitted smooth over a mattress on a wooden bed, with the Handmade in the USA seal and the GOTS label.
  • The Circadian Waterproof Organic Cotton Mattress Protector fitted smooth over a mattress on a wooden bed, with the Handmade in the USA seal and the GOTS label.
  • The foot corner of a bed: the mattress protector runs smooth down the side of the mattress and its elastic edge tucks under the mattress, with a label: a deep elastic pocket that tucks under your mattress.
  • A woman shakes out a white fitted sheet by the window to make the bed over the mattress protector in a pine-panelled bedroom, with labels: keeps spills out of your mattress, and quiet, with no crinkle.
  • A woman opens the curtains in a bright bedroom, the mattress protector fitted smooth over the mattress and the duvet turned back.
  • The Waterproof Organic Cotton Mattress Protector comes in Twin, Twin XL, Full, Queen, King and Cal King, each with a deep elastic pocket for a mattress and topper up to 10 inches.
  • A worker at her sewing machine in the New Jersey workshop where our organic cotton bedding is sewn.
  • A farmer checks open cotton bolls in an organic cotton field at harvest.
  • The Circadian Waterproof Organic Cotton Mattress Protector fitted smooth over a mattress on a wooden bed, with the Handmade in the USA seal and the GOTS label.
  • The foot corner of a bed: the mattress protector runs smooth down the side of the mattress and its elastic edge tucks under the mattress, with a label: a deep elastic pocket that tucks under your mattress.
  • A woman shakes out a white fitted sheet by the window to make the bed over the mattress protector in a pine-panelled bedroom, with labels: keeps spills out of your mattress, and quiet, with no crinkle.
  • A woman opens the curtains in a bright bedroom, the mattress protector fitted smooth over the mattress and the duvet turned back.
  • The Waterproof Organic Cotton Mattress Protector comes in Twin, Twin XL, Full, Queen, King and Cal King, each with a deep elastic pocket for a mattress and topper up to 10 inches.
  • A worker at her sewing machine in the New Jersey workshop where our organic cotton bedding is sewn.
  • A farmer checks open cotton bolls in an organic cotton field at harvest.
Waterproof Organic Cotton Mattress Protector

Waterproof Organic Cotton Mattress Protector

$149

Keeps spills, sweat and dust out of your mattress, in soft organic cotton that goes in the washer. A fitted protector with a ten-inch pocket, deep enough for a mattress and a topper together.

  • Keeps spills, sweat and dust out of your mattress
  • Organic cotton on both faces, quiet under your sheet
  • A ten-inch pocket, deep enough for a topper too
  • Machine wash cold, hang dry
Size

15% off when you buy it with our latex or wool and latex mattress.

Make it a set

Free shipping. Sleep on it for 60 nights, and get a full refund if it isn't right.

Made by hand for you in New Jersey. Ships in 3 to 5 weeks.

Read the full description

Keeps spills, sweat and dust out of your mattress, in soft organic cotton that goes in the washer. A fitted protector with a ten-inch pocket, deep enough for a mattress and a topper together.

A mattress takes in a glass of water, a night sweat or a child's accident, and it cannot go in the washer afterwards. This protector stops all of it at the surface, so the mattress you paid for stays clean and lasts. When something does spill, the protector goes in the washing machine and the mattress never has to.

The protector is two layers of organic cotton knit with a very thin waterproof layer between them. That inner layer is made from corn starch and makes up less than a tenth of the fabric. What you feel through your sheet is soft cotton knit.

Handmade to order in New Jersey. Ships in 3 to 5 weeks, free. Sleep on it for 60 nights, risk-free, and get a full refund if it isn't right.

Sleep trial
You have 60 nights to sleep on it. If it is not right, write to jacob@circadianrest.com and we will make it right, with a full refund if that is what you want. To send it back, it needs to come back clean and unstained. We send you a prepaid label, and your refund goes out as soon as it reaches our workshop. It ships in 3 to 5 weeks, and shipping is free.
Free shipping
Handmade to order in New Jersey. Ships in 3 to 5 weeks, free.

Quick answers

Is it waterproof?
Yes. A thin layer made from corn starch sits between two layers of organic cotton knit. A spill stays in the protector and never reaches your mattress. Pull it off, wash it, and the mattress underneath is dry.
Will it fit my mattress?
It fits mattresses up to about ten inches deep. That covers our seven-inch mattresses with a two- or three-inch topper on top, and most other mattresses. Measure your mattress, and add the topper if you use one, before you choose.
How do I wash it?
Machine wash it cold and hang it to dry. Skip bleach, because bleach can loosen the bond between the cotton and the waterproof layer.
What if it isn't right for me?
You have 60 nights to sleep on it. If it is not right, write to jacob@circadianrest.com and we will make it right, with a full refund if that is what you want. To send it back, it needs to come back clean and unstained. We send you a prepaid label, and your refund goes out as soon as it reaches our workshop. It ships in 3 to 5 weeks, and shipping is free.
More questions about this protector

As featured in

Keeps your mattress clean for years

A mattress cannot go in the washer after a spill. This protector stops it at the surface, and then the protector goes in the washer instead.

It matters most on a wool mattress or topper, so spills and sweat never soak into the wool.

A folded organic cotton knit mattress protector on a bed, its elastic edge showing.

What's inside

  • Two layers of organic cotton knit

    Soft cotton knit on both faces, so it is quiet and soft under your sheet.

  • A thin waterproof layer

    Made from corn starch, less than a tenth of the fabric, sealed between the cotton.

  • A ten-inch pocket

    Elastic all the way around. It fits our mattresses with a topper on top.

  • GOTS certified organic

    The finished protector is certified to GOTS, the Global Organic Textile Standard, with no added fragrance or chemical finish.

Folded organic cotton fabric stacked on wooden shelves in the workshop.

How it feels

Quiet under your sheet.

You lie on your fitted sheet, and under it the protector feels like a second soft layer.

  • Dry

    A spill stops here.

    It never reaches the wool or the latex underneath.

  • Quiet

    No crinkle when you turn.

    Cotton on both faces, with none of the sound of a plastic cover.

  • Easy

    It goes in the washer.

    Machine wash cold with your sheets and hang it to dry.

  • Pocket10 inches
  • CareMachine wash cold
  • FitElastic all around

Natural bedding, filmed at home

What's not in the protector.

Plastic protectorsThis protector
A plastic surface that crinkles when you turn over.
Organic cotton on both faces, quiet under your sheet.
Traps heat against you.
Cotton against you, over a thin layer made from corn starch.
The longer version

Plastic protectors crinkle and trap heat against you. This one is two layers of organic cotton knit with a thin waterproof layer made from corn starch between them. The finished protector is GOTS certified organic and made without added fragrance. GOTS, the Global Organic Textile Standard, bans the PFAS stain and water finishes many waterproof pads rely on.

Sizes and specs

SizeFits a mattress
Twin39 × 75 in, up to 10 in deep
Twin XL39 × 80 in, up to 10 in deep
Full54 × 75 in, up to 10 in deep
Queen60 × 80 in, up to 10 in deep
King76 × 80 in, up to 10 in deep
Cal King72 × 84 in, up to 10 in deep

Each protector is made by hand, so sizes can run an inch over or under.

Faces
Two layers of organic cotton knit
Inside
A thin waterproof layer made from corn starch, under a tenth of the fabric
Fit
Fitted, with elastic all around and a 10 inch pocket
Certified
GOTS certified organic, the finished protector
Care
Machine wash cold, hang dry, no bleach

How it compares

 This protectorPlastic protector
FacesOrganic cotton knit on both sidesA plastic or polyester surface
SoundQuiet when you turn overCrinkles every time you turn over
HeatCotton against you, over a thin inner layerTraps heat against you
FinishNo PFAS stain or water finish, which GOTS bansMany carry a PFAS stain or water finish

Typical products in each category.

How it works

Sleep on it for 60 nights

  1. 01

    Fit it like a sheet

    Elastic all the way around and a ten-inch pocket.

  2. 02

    Wash it with your sheets

    Machine wash cold, hang dry, no bleach.

  3. 03

    Keep it or send it back

    Not right within 60 nights? Full refund.

Jacob Katz, founder of Circadian, laughing on a bed.

I couldn't find a mattress protector I trusted either.

Jacob Katz, founder

I spend as much time outside as I can, and I wanted my eight hours in bed to be just as clean. Most mattresses are foam, with fiberglass or flame retardants to pass the fire test. Ours are made from tree-tapped latex, cotton and wool, with wool as the fire barrier. Every one is made by hand to order in New Jersey.

Common questions

Is it waterproof?

Yes. A thin layer made from corn starch sits between two layers of organic cotton knit. A spill stays in the protector and never reaches your mattress. Pull it off, wash it, and the mattress underneath is dry.

Will it make me sleep hot?

It feels far cooler and less sticky than a plastic protector, because both faces are cotton knit. Any waterproof layer lets less air through than plain cotton, so we keep ours very thin, less than a tenth of the fabric. That way you keep spills out of the mattress and still lie on soft cotton.

Is it organic?

Yes. The finished protector is GOTS certified organic, the Global Organic Textile Standard. The cotton knit on both faces is organic, and the workshop that makes it is audited every year.

Is there any PFAS in it?

No, there are no PFAS stain or water finishes on it. Many waterproof pads get their water resistance from PFAS, the forever chemicals. This one keeps spills out with a film thinner than paper, made from corn and sealed between two layers of organic cotton knit. That film is the one synthetic layer, and what you lie on is cotton. The finished protector is GOTS certified organic, and GOTS, the Global Organic Textile Standard, bans PFAS at every stage.

Will it fit my mattress?

It fits mattresses up to about ten inches deep. That covers our seven-inch mattresses with a two- or three-inch topper on top, and most other mattresses. Measure your mattress, and add the topper if you use one, before you choose.

How do I wash it?

Machine wash it cold and hang it to dry. Skip bleach, because bleach can loosen the bond between the cotton and the waterproof layer.

Show 4 more questionsShow fewer questions
Can I put it over a topper?

Yes. The ten-inch pocket was chosen for that. Lay the topper on the mattress, then fit the protector over both, then your fitted sheet. It keeps the topper lined up with the mattress and keeps spills out of both.

Do I need it with the Tree-Tapped Latex Mattress?

That mattress already has a waterproof case, so a spill wipes off it. The protector adds a layer you can put in the washer, which is easier than wiping down a mattress. On our Organic Wool & Tree-Tapped Latex Mattress, which has no waterproof film in its case, we always suggest one.

What if it isn't right for me?

You have 60 nights to sleep on it. If it is not right, write to jacob@circadianrest.com and we will make it right, with a full refund if that is what you want. To send it back, it needs to come back clean and unstained. We send you a prepaid label, and your refund goes out as soon as it reaches our workshop. It ships in 3 to 5 weeks, and shipping is free.

What's the warranty?

It is covered by the 60-night trial, and then for 1 year against manufacturing defects. That means a seam or the waterproof layer failing under normal use. If it fails, we repair or replace it free. Stains and damage from bleach or high heat are not covered, because the care card asks for a cold wash and a hang dry. To make a claim, write to jacob@circadianrest.com with your order number and a photo.