Simons Maison
Harmonie Mattress Protector
The Harmonie Mattress Protector is a bedding accessory designed to safeguard mattresses and add a layer of comfort. It features a quilted top and a fitted skirt with super-stretch edging, fitting mattresses up to 14 inches thick for Twin size and 16 inches for Double, Queen, and King sizes. Made with recycled polyester casing and fill, it is available in Twin (39x75x14 inches), Double (54x75x14 inches), Queen (60x80x16 inches), and King (78x80x16 inches) dimensions.
- Material
- Recycled polyester
- Category
- Home & Garden > Linens & Bedding > Bedding > Mattress Protectors
Color
Size
Specifications
A high-value mattress protector with recycled polyester casing and fill, offering extra comfort and easy maintenance.
Recycled polyester casing made from post-consumer plastic bottles; recycled polyester fill for extra comfort; super stretch edging fits mattresses up to 14" (Twin) or 16" (other sizes) thick.
- Material
- Recycled polyester
- Age Group
- adult
- Condition
- new
- Category
- Home & Garden > Linens & Bedding > Bedding > Mattress Protectors
Additional Attributes
- Simons Maison exclusive
- designed in Canada
- recycled polyester casing from post-consumer plastic bottles
- recycled polyester fill
- super stretch edging
- fits mattresses up to 14 inches (Twin) or 16 inches (other sizes)
Product Insights
The Harmonie Mattress Protector from Simons Maison offers a quilted comfort layer of recycled polyester that softens firm mattresses and stays smooth with full elastic edges, but it is not waterproof—a tradeoff that prioritizes breathability and eco-conscious materials over spill protection, though some users report heat retention.
- Waterproofing
Buyers report liquid spills and accidents soak through the fabric.
Why this is supported
Multiple buyer reviews confirm that the mattress protector does not prevent liquid from reaching the mattress, despite its 'protector' naming. The recycled polyester fabric is breathable, which keeps sleepers cool but allows moisture to pass through freely. The product is designed as a comfort layer to soften firm mattresses rather than a waterproof barrier, contrasting with basic vinyl protectors that prioritize liquid protection over padding.
- Cushioning
Thin polyester fill provides modest cushioning, softening firm mattresses.
Why this is supported
The recycled polyester fill gives a semi-padded feel:
Semi rembourrée, ce qui donne une impression de surmatelas.
Customer review, July 16, 2025The padding is described as thin; buyers say it has minimal plushness. Research confirms the padding is modest:
provides a modicum of padding—enough to slightly mute the feel of a very firm mattress without buying a separate topper
How it stacks up against other budget protectors — cushioning_vs_bare_waterproof_sheetsOne customer called it
A nice soft layer between my sheet and mattress.
Customer review, December 30, 2023- Temperature
Buyers report the padding retains body heat.
Why this is supported
Buyer feedback indicates the recycled polyester fill retains body heat, which can be uncomfortable for sleepers who overheat. This is a potential downside for temperature-sensitive users.
- Fit
Full elastic edging prevents bunching and keeps padding smooth.
Why this is supported
The fitted-sheet design with super stretch edging ensures the padding stays in place:
This protector uses a fitted sheet style with super stretch edging — meaning the entire perimeter is elasticated, not just corner straps.
Does this protector have a fitted sheet style with full elastic edges, or only corner straps? The description mentions 'super stretch edging'—can you clarify the design?- Protection
Opts for comfort padding over waterproof protection.
Why this is supported
This protector prioritizes comfort over liquid protection:
the Harmonie skips waterproofing and instead prioritizes a recycled polyester fill to soften a firm mattress—placing it for buyers who want a bit of plushness rather than liquid protection.
How it stacks up against other budget protectors — comfort_fill_vs_waterproof_protection- Stay-put
Full elastic perimeter keeps it smooth and wrinkle-free all night.
Why this is supported
The protector is designed with a fitted-sheet-style perimeter. As confirmed in Q&A:
the entire perimeter is elasticated, not just corner straps
Does this protector have a fitted sheet style with full elastic edges, or only corner straps? The description mentions 'super stretch edging'—can you clarify the design?Users confirm it stays in place:
Goes on like a fitted sheet and stays in place at the corners.
Customer review, December 30, 2023- Material
100% recycled polyester casing and fill create a quilted comfort layer.
Why this is supported
The product specifications state the casing is made with recycled polyester, and the fill is also recycled polyester. While the IKEA LENAST uses standard
Polyester
ikea.com, the Harmonie's recycled fill is quilted into a comfort layer that reviews describe as
Semi rembourrée, ce qui donne une impression de surmatelas.
Customer review, July 16, 2025and
A nice soft layer between my sheet and mattress.
Customer review, December 30, 2023. The thin construction is generally breathable, though a minority of warm sleepers find it retains heat.
The product’s material listing is 100% recycled polyester for both casing and fill. Deep research contrasts this with the IKEA LENAST, which simply lists
, while the Harmonie’s casing is made from recycled post-consumer plastic bottles, giving budget-conscious shoppers an environmental story without the typical green premium. For example,
the Mainstays Large Fitted Vinyl Mattress Protector ($11.52 CAD) and many low-cost alternatives are just waterproof barriers with no added comfort, the Harmonie’s recycled polyester fill provides a modicum of padding
How it stacks up against other budget protectors — cushioning_vs_bare_waterproof_sheets. Even within the Simons Maison line, the Harmonie drops the cotton shell but retains the recycled polyester fill, ensuring a cushioning layer at the lowest entry price. And the casing’s stretch edging accommodates mattresses up to 16 inches thick, matching premium protectors.
- Value
At $29.95, it offers cushioning fill that cheaper vinyl protectors lack, feeling higher quality.
Why this is supported
The Harmonie is presented as
An exceptional value
testetest12.myshopify.comin the Simons Maison line, offering a recycled polyester fill for cushioning not found in cheaper protectors like the Mainstays vinyl. Customers confirm:
This is a nice mattress protector for the price.
Customer review, December 30, 2023.
- Waterproof
Not waterproof, prioritizing breathable comfort over liquid protection.
Why this is supported
Unlike the Beddora Bamboo protector, which uses a TPU layer advertised as
Waterproof: the TPU layer blocks spills, sweat, and stains from reaching the mattress.
beddora.ca, the Harmonie is intentionally not waterproof. Customer reviews confirm it prioritizes breathability and a soft quilted surface over liquid protection.
- Eco trade-off
Skips waterproofing for recycled comfort; opposite of Beddora Bamboo.
Why this is supported
The Harmonie forgoes a waterproof barrier entirely. In contrast, the similarly priced
the Beddora Bamboo Mattress Protector adds a waterproof TPU layer and a cool-touch bamboo-viscose surface, while the Harmonie skips waterproofing and instead prioritizes a recycled polyester fill to soften a firm mattress
How it stacks up against other budget protectors — comfort_fill_vs_waterproof_protection. This makes the Harmonie ideal for eco-conscious users seeking plushness rather than liquid protection.
- Machine washing
Buyers report it washes and dries without shrinking; maintains shape and softness.
Why this is supported
A verified buyer review confirms that the recycled polyester construction is machine-washable and dryer-safe without shrinking, and that it maintains its shape, fit, and soft feel through repeated wash cycles.
- Dimensions
King is 78 inches wide (2 inches oversize for standard king); Twin fits 14 inches deep.
Why this is supported
The King-size protector is 78 inches wide, 2 inches more than a standard 76-inch king mattress.
some buyers find it oversize for standard king mattresses
gotchaConversely, the super-stretch edging fits mattresses up to 16 inches deep, which
makes it compatible with most models sold today.
sleepfoundation.orgHowever, the Twin size is limited to 14 inches, so owners of deeper twin beds should note this.
Deep research compared the pocket depth to premium protectors:
fits mattresses up to 16 inches thick for Double through King sizes, matching the 16-inch pocket depth of the Saatva Waterproof Mattress Protector ($145 USD)
How it stacks up against other budget protectors — pocket_depth_rivaling_premium_protectors- Fitted design
Full elastic edges keep the protector smooth and wrinkle-free.
Why this is supported
The protector uses full-perimeter elastic, as confirmed by the brand's Q&A:
This protector uses a fitted sheet style with super stretch edging — meaning the entire perimeter is elasticated, not just corner straps.
Does this protector have a fitted sheet style with full elastic edges, or only corner straps? The description mentions 'super stretch edging'—can you clarify the design?This design prevents sagging and keeps the protector smooth and wrinkle-free.
- Comfort padding
Thin recycled polyester padding softens firm mattresses without bulk.
Why this is supported
The recycled polyester fill provides a soft layer that reviewers note softens the mattress surface. One customer described it as
A nice soft layer between my sheet and mattress
Customer review, December 30, 2023. Another noted,
Could have been thicker, but overall it was what I was looking for
Customer review, February 6, 2023. Together, these confirm the padding adds softness without significant bulk.
- Breathability
Does not repel liquids but allows airflow for most sleepers.
Why this is supported
This protector does not provide a waterproof barrier; spills soak through to the mattress. However, its quilted construction allows airflow, with one reviewer noting
Respire bien
Customer review, July 16, 2025. It is best for users seeking comfort and dust protection rather than liquid protection, and hot sleepers may find it retains heat.
Image Analysis
2 images- 01
Product
A fitted white mattress protector pulled over the top and sides of a mattress; the top surface has a quilted diamond pattern and the protector forms a smooth fitted skirt down the mattress sides with rounded corners.
- Quilted top surfaceTop face of the protector shows a stitched diamond quilt pattern with evenly spaced diagonal stitch lines forming small diamond shapes across the visible top area.
1 region
x 0.33 · y 0.18 · w 0.58 · h 0.38 (high) - Fitted skirtProtector extends down the mattress sides as a smooth fitted skirt with fabric pulled taut against the mattress, showing a seam where the top panel meets the side panel near the upper edge.
1 region
x 0.33 · y 0.56 · w 0.58 · h 0.22 (high) - Rounded cornerVisible mattress corner is rounded with the protector neatly wrapped around the corner and stitching visible along the corner curve.
1 region
x 0.24 · y 0.41 · w 0.18 · h 0.18 (high) - Surface textureTop fabric has a slightly textured knit appearance visible between quilt stitches, creating a subtle raised texture across the surface.
1 region
x 0.45 · y 0.25 · w 0.30 · h 0.22 (medium) - Side panel patternSide skirt fabric has a faint, fine textured pattern different from the top quilt, appearing smoother and less raised.
1 region
x 0.40 · y 0.60 · w 0.45 · h 0.18 (medium)
Other
Image shows the mattress protector on a mattress placed inside a wooden bed frame, photographed at an angled overhead front-right perspective against a neutral wall with soft, diffused lighting and minimal shadows.
- Shot compositionAngled overhead three-quarter view showing the top and near side of the mattress with the bed frame foregrounded at the bottom of the image.
- Supporting propWooden bed frame with a medium brown wood finish is visible along the bottom edge of the image and serves as the supporting surface for the mattress.
1 region
x 0.00 · y 0.74 · w 1.00 · h 0.26 (high) - Background and lightingNeutral light beige wall and floor with soft, even lighting and mild gradient shadows across the wall; no visible text or labels in the scene.
Colors
bright white· top quilted surface#EAEAEAoff-white· side skirt#F1F1F3- Quilted top surfaceTop face of the protector shows a stitched diamond quilt pattern with evenly spaced diagonal stitch lines forming small diamond shapes across the visible top area.
- 02
Product
Close-up of a white mattress protector showing a quilted top panel, a smooth fabric skirt, and a visible zipper with contrasting trim along one edge.
- Quilted top panelRight side of the image shows a quilted mattress protector surface composed of square stitched baffles with a subtle raised dot texture on each square.
1 region
x 0.56 · y 0.02 · w 0.42 · h 0.96 (high) - Smooth protective skirtLeft side shows a smooth, unquilted fabric panel or skirt that appears to wrap down the mattress side; surface is plain and slightly matte.
1 region
x 0.00 · y 0.00 · w 0.56 · h 0.96 (high) - Zipper and trimA narrow zipper seam runs between the quilted top panel and the smooth skirt, with a thin contrasting trim visible along the zipper line.
1 region
x 0.51 · y 0.00 · w 0.06 · h 0.96 (high) - Edge scallop detailAlong the inner edge adjacent to the zipper there are scalloped rounded quilted shapes visible where the top panel meets the zipper.
1 region
x 0.50 · y 0.06 · w 0.05 · h 0.88 (medium) - Visible mattress cornerLower left corner shows a small exposed area of a wooden floor or bed frame at the mattress edge.
1 region
x 0.00 · y 0.90 · w 0.12 · h 0.10 (high)
Other
Studio-style product shot with even soft lighting, neutral background, and slight shadowing; image framed as a close-up detail of the protector on a mattress.
- Shot compositionImage is a cropped top-down oblique close-up focusing on the mattress protector edge and surface textures.
- Lighting and shadowSoft, diffuse lighting with gentle shadows emphasizing the quilt stitching and texture without harsh highlights.
- Background surfaceA small visible section of wood-grain surface appears at the bottom left corner beneath the mattress edge.
1 region
x 0.00 · y 0.90 · w 0.12 · h 0.10 (high)
Colors
bright white· quilted top panelwhite· smooth skirt panel#E5E3E9light gray· zipper trim#B4B4B4- Quilted top panelRight side of the image shows a quilted mattress protector surface composed of square stitched baffles with a subtle raised dot texture on each square.
Documents & Data
Customer Reviews
136 total136 reviews · out of 5
Rend le lit plus confortable.
Rend le lit plus confortable. Excellent rapport qualité/prix
Fits perfectly and nice and
Fits perfectly and nice and soft
Protège-matelas
Ajuste très bien Belle qualité/prix
S'adapte bien au matelas
Je le recommande
Bonne qualité à ce prix.
J’aime bien la finition de ce couvre matelas. L’entretien est facile, il conserve son bel aspect.
Très bien
Bonne qualité prix
Protège matelas Harmonie
J'apprécie beaucoup cet article. Facile d'entretien. J'ai fait l'achat de 2. Le 2e est déjà donné.
Bonne qualité prix
Bonne qualité prix
Fits perfect
Fits perfect
Mer ci très satisfaite
Mer ci très satisfaite
Belle qualité, s’installe bien sûr
Belle qualité, s’installe bien sûr le lit.
excellent service comme d'habitude. Livraison le lendemain.
Quand j'ai un escompte, je ne sais pas où le trouver et où l'appliquer.
Couche rembourrée
Protection parfaite. Semi rembourrée, ce qui donne une impression de surmatelas. Respire bien.
Bonne qualité
Assez épais, semble de bonne qualité
Moins epais que je pensais
Moins epais que je pensais
Love it
Recommended
Beau tissus
Pas encore mis à l’épreuve
Très satisfaite, ce choix de
Très satisfaite, ce choix de protège-matelas est parfait pour les besoins d’un canapé-lit qui sera utilisé occasionnellement. Bonne qualité pour le prix.
Excellent product
Excellent quality, better than the picture. Breathable and comfy.
bonne qualité
bonne qualité
It’s good
It’s much better than picture and very comparable
Qualité-prix 5 étoiles
Livraison record !!!
Super qualité
Le dessus est légèrement coussiné. Super facile à enfiler même si mon matelas et très épais.
Completement satisfaite, qualité et prix
Completement satisfaite, qualité et prix
Abordable, mais qualité correcte (sans
Abordable, mais qualité correcte (sans plus)
Harmonie
S'adapte parfaitement à mon tatami de 8" épais.
Excellent product
Washes easily, a breathable mattress protector
Fits well!
Could have been thicker, but overall it was what I was looking for.
Belle qualité
Belle qualité
Un choix gagnant
Fait très bien confortable
Très belle qualité.
Très belle qualité.
OK
OK
Bien fait
Qualité, prix très bien
Bonne appréciation
correspond à l'article recherché
La qualité du tissu et
La qualité du tissu et le confort offert par le matelassé.
Belle qualité
Belle qualité
Quality for a good price
This is the very kind of mattress cover I need on most beds. It durable, cushiony and perfect fit.
Protège-matelas Harmonie
ce protège-matelas est parfait.
Très satisfaite
Pas très épais, mais très bon rapport qualité-prix.
En Harmonie
Très satisfaite, il s’ajuste bien au matelas.
Fit parfait
Belle qualité. Recouvre parfaitement le matelas
Mon préféré!
Le rapport qualité/prix est vraiment super’
J’aime
J’aime
Protège matelas
Très satisfaite, ce ä quoi je m’attendais.
Excellent
Excellent
perfect
excellent quality, great value
Bon achat
couvre très bien le matelas et le matelas mousse.
Tous
-très bon choix
un peu mince, mais la
un peu mince, mais la dimension est exacte pour le matelas
Prix imbattable
Grandeur parfaite, beau tissu léger.
Bon rapport qualité-prix
Le pourtour du protège-matelas est conçu avec un tissu fin de qualité. Facile à installer. Excellent pour les matelas de 12 pouces.
Confection irréprochable.
Très bon rapport qualité/prix. C'est sans compter sur la facilité de commander et la rapidité du service. Merci!
Je ne l’ai pas utilisé
Je ne l’ai pas utilisé encore!
Nice mattress protector
This is a nice mattress protector for the price. Goes on like a fitted sheet and stays in place at the corners. A nice soft layer between my sheet and mattress.
Achat parfait
Enfin un protège matelas qui tient bien en place et ne fait pas de plis inconfortables!
Bon rapport qualité-prix
Bon rapport qualité prix. J'ai le format pour lit king et le fit est bon. Les matériaux semblent de qualité.
Parfait
S’adapte bien à mon matelas double et tient en place avec le drap. À noter que j’ai un lit articulé.
Satisfaction du couvre matelas
J'aime beaucoup mon nouveau couvre-matelas. J'en profite pour vous souhaiter un très Joyeux Noël à vous et à votre famille et tous ceux que vous aimez!
Facile à enfiler du le matelas
J’apprécie
Parfait!
Belle texture, s'adapte parfaitement au matelas. Seul bémol, pas très épais.
Parfait
Bon achat
Confortable
Tissu très doux, belle qualité.
Parfait
Parfait
Great fit
Covers well our mattresses - bought a second one.
Tres satisfaite
Je connais bien ce pretege-matelas, car je l'utilise pour d'autres lits.
Good fit and quality
I have bought this for all beds in the house. Washes well without shrinkage!
Très bonne qualité !
Très satisfaite de ma commande. Délais de livraison très courts et parfaitement emballé.
Perfect for guest bedroom
Fits perfectly & washes well. Good quality for the price.
Confortable
Belle texture de tissu et douceur au toucher, confortable pour la nuit
Texture
Très satisfaite de la texture semble très confortable. Très facile pour l entretien aussi
Très confortable et très bonne
Très confortable et très bonne qualité et excellent rapport qualité prix
bon ajustement
tient bien en place et sèche rapidement au lavage.
Toujours la qualité
Un bon rapport qualité prix. Livraison rapide. Beaux et bons produits, satisfaction au RV🤩😍
Excellent couvre matelas
Excellent couvre matelas
bon produit
Un fit parfait pour les deux grandeurs de lit.
Excellent qualité prix !
Un très bon achat pour protéger son matelas!!
Satisfaite.
Satisfaite.
C'est le printemps
Conforme
Didn’t really protect from a night time accident
My little one had a night time accident this week for the first time after buying this. The mattress was wet, protection was minimal.
Excellente qualité.
Parfait, s' ajuste comme il faut.
Parfait
J’aime beaucoup c’est mon deuxième achat pour le lit de la chambre d’amis.
Great price, great service and great product
Fits well on my double bed . I washed and dried it to fluff it up a little and it;s perfect!
Nice
Not too thin or too thick, I have a huge mattress and it fits very well on it. Good quality.
Excellent product - fit as
Excellent product - fit as described online.
Très bien satisfaite
Très bien satisfaite
Comfortable
Very comfortable
Bon rapport qualité-prix
Bon rapport qualité-prix
Harmonie
Bonne qualité, bon prix. Couvre bien les matelas épais. Je recommande sans hésiter ce produit Harmonie.
Parfait
Parfait
Super
J’aime ce produit, facilité d’entretien et protège bien et sincèrement à un prix attirant.
Très satisfaite
Très satisfaite
Très bonne qualité
Très bonne qualité
Protège matelas Harmonie
Très bien !
Protege matelas de qualité
Bonne qualité etbon prix
Fameux
Très doux et resistant
Produit de qualité pour le prix
Il fait très bien sur un matelas de plus de 12 pouces de hauteur
Bon rapport qualité/prix
Surprise de la qualité du produit pour un prix très acceptable
J’aime bien mais j’ai beaucoup
J’aime bien mais j’ai beaucoup chaud 🥵
Couvre matelas
Je suis un peu déçue de ce couvre matelas, très mince et avec une drôle de texture. J’avais déjà commandé un couvre matelas chez Simons et je pensais que c’était la même chose.
Très bien
Belle qualité
Fits well, good size
Very generous skirt for even deeper mattresses
Fait bien
Assez épais , se place bien autour du matelas. . .
Parfaite
Correspond bien à la description .
Bon
J’ai acheté ce protège-matelas afin d’atténuer l’odeur de mon nouveau matelas. Cependant, il n’est pas assez épais pour bloquer complètement l’odeur.
Bonne qualité, satisfaite !
Bonne qualité, satisfaite !
Satisfaction
Très belle qualité pour le prix, très satisfait de mon achat.
Excellent
Parfait
Parfait
Bon rapport qualité prix!
Satisfait
Excellent
Les oreillers sont confortable et
Les oreillers sont confortable et légère. Les protège-matelas recouvre très bien nos matelas
Protège-matelas
Bonne qualité.
Tres bien
Tres bien
Couvre matelas
Très satisfaite ainsi que du service rapide
Protège matelas
Tel que décrit sur le site. Belle composition de matériaux.
Parfait
Très bon protège matelas, moelleux.
livraison rapide bon service Merci!
livraison rapide bon service Merci!
protège-matelas
Bon produit, facile d'entretien et tiens bien sur le matelas.
Parfait
Parfait
Impeccable
Impeccable
Satisfaite encore une fois !
Satisfaite encore une fois !
Vont bien sur les deux lits de taille differente
Livraison rapide. Qualité du produit
Très bien
Très bien
Faitl’affaire
Un peu mince
Moelleux couvre bien
Moelleux couvre bien
Protège matelas
Tissu très doux et frais. Qualité prix imbattable. J'en ai même commandé un autre pour un membre de ma famille.
Protege-matelas
Cette grandeur très grand à King ! Il y’a une grosse différence dans la grandeur , trop grand pour mon matelas et la qualité était discutable.
Correct
Correct pour le prix
Excellente qualité
Le protège matelas est super doux et nous n'avons pas perçu de différence entre seulement nos draps et avec le protège matelas pour la chaleur du lit.
Parfait
Parfait
Mattress protector
Mattress claims it feels 100% safe with this protector. Since putting it on my mattress, I too have noticed a decrease in undesirable characters around my mattress.
excellent
Très bonnne qualité\prix
Bien fait
Bien fait
Pour un matelas d’amis
Je l’ai souvent acheté pour toute la famille Je préfère l’autre qualité imperméable que j’utilise dans mon lit depuis plusieurs années
Bonne dimension pour matelas épais
Bonne dimension pour matelas épais
Très confortable
Très confortable
Protège matelas
Protège matelas