St Dormeir® Washable Wool Mattress Protector

St Dormeir® Washable Wool Mattress Protector

Sale price$195.00 5.0

Protect your mattress without covering it in a waterproof membrane. The St Dormeir® Mattress Protector combines pure virgin wool with a soft cotton terry surface to create a breathable layer between you and your mattress. Wool naturally manages heat and moisture while adding subtle cushioning, making the Dormeir particularly well suited to latex mattresses and other breathable sleep systems.

Everyday Low Pricing

All prices include shipping

Size: Twin
Mattress Sizes
Size  Inches Centimeters
Twin 38" x 75" 97 cm x 191 cm
Twin XL 38" x 80" 97 cm x 203 cm
Double  54" x 75" 137 cm x 191 cm
Queen 60" x 80" 152 cm x 203 cm
King 76" x 80" 193 cm x 203 cm

Due to the inexact nature of latex rubber, all sizing is +/- 2" or 5 cm. 

Size
Thickness: 16"

Thickness
Pillows ship 1-7 business days from the time of order.

Breathable. Comfortable. Easy to Care For.

Natural

Wool where it matters. Pure virgin wool provides a naturally breathable layer between you and your mattress, with cotton against the sleep surface.

Regulating

Stay comfortable and dry. Wool naturally absorbs moisture vapour and allows it to evaporate, helping maintain a drier and more comfortable sleep environment.

Comfortable

Protect without hiding your mattress. Wool and cotton create a soft, breathable protector that adds subtle cushioning without overwhelming the feel of the mattress underneath.

Pure Virgin Wool

Naturally Regulating

Pure virgin wool naturally absorbs moisture vapour and allows it to evaporate, helping maintain a drier and more comfortable sleep environment throughout the year.

Cotton Terry

Soft & Breathable

A chemical-free terry fabric creates the surface, with 100% cotton pile for softness and breathability and a polyester base for added durability.

Machine Washable

Natural Doesn't Mean Difficult

The St Dormeir® can be machine washed when the manufacturer's care instructions are followed, making natural wool protection practical for everyday use.

Pure Virgin Wool

Naturally Regulating

Pure virgin wool naturally absorbs moisture vapour and allows it to evaporate, helping maintain a drier and more comfortable sleep environment throughout the year.

Cotton Terry

Soft & Breathable

A chemical-free terry fabric creates the surface, with 100% cotton pile for softness and breathability and a polyester base for added durability.

Machine Washable

Natural Doesn't Mean Difficult

The St Dormeir® can be machine washed when the manufacturer's care instructions are followed, making natural wool protection practical for everyday use.

Choose Your Mattress Protector

Four Protectors. Four Different Priorities.

The right mattress protector depends on the type of protection and comfort you value most. Our four options range from breathable natural fibres and temperature-regulating technology to waterproof protection and full mattress encasement.

Wool Mattress Protector

Wool

Natural & Breathable

Pure virgin wool and cotton create a soft, breathable protective layer. Wool naturally helps manage temperature and moisture while adding subtle cushioning.

Best for: Natural sleep systems, breathability and moisture management.

Shop Wool Mattress Protectors
Ambicool Cotton Mattress Protector

AmbiCool

Protective & Regulating

Soft cotton jersey combines with Outlast® phase-change technology to provide everyday mattress protection while helping manage temperature changes.

Best for: Everyday mattress protection with temperature regulation.

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Full Wrap Mattress Protector

Complete

Waterproof & Enclosed

A waterproof membrane and six-sided encasement create a barrier against liquids, allergens, dust mites and bed bugs.

Best for: Spills, accidents and maximum mattress protection.

Shop Complete Mattress Protectors
A white mattress fitted sheet and two stacked white pillows on a wooden bed frame with a gray tufted headboard, shown in a styled bedroom setting with a brick wall, window, and nightstand.

Allergy

Natural & Protective

Tightly woven long-staple cotton creates a physical barrier against dust mites and bed bugs without a waterproof membrane.

Best for: Dust mite and bed bug protection with breathable cotton construction.

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Which One Should I Choose?

Choose Wool if natural fibres, breathability and moisture management are your priorities.

Choose AmbiCool if you want everyday mattress protection with additional temperature regulation from Outlast® phase-change technology.

Choose Complete when maximum protection is the priority, particularly for liquids, spills, allergens, dust mites or bed bugs.

Choose Allergy when you want full mattress encasement against dust mites and bed bugs with a breathable, membrane-free cotton construction.

The Details

Everything you need to know about your mattress, from materials and specifications to layer exchanges, shipping, warranty, and returns.    

A Closer Look at Our Bedding

Explore our collection of sheets, duvets, and mattress protectors, and learn how natural materials like cotton, wool, and down can help create a more comfortable sleep environment.

FAQ

Have questions about latex mattresses? Explore straightforward answers about materials, construction, firmness, care, and choosing the right mattress for you.

Our customer support is available Monday to Friday: 8am-3pm and from 12pm-2pm on Saturdays.Average answer time: 1 Business Day
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T
Tracy
Best Mattress Protector I've used

This is by far the best quality, and superior mattress protector I've used. I believe in quality over quantity, so I've bought a number of higher end mattress covers over the years. None is in this quality. Just fantastic. Who knew a mattress cover could make a person happy, but this one does. Can't recommend enough, and the company is fantastic to deal with. I've been doing research, including on The Mattress Underground site for +10 years, thankfully they are out there too to help decipher the terrible issues in the industry, and give people a true and authentic place to go find something so important - a mattress, and reliable manufacturers. MFC is in their trusted partners list, and I felt much more comfortable buying sight unseen. I bought their latex topper too. It's equally, maybe more fantastic. When my bed is ready to be replaced I'll likely buy a latex mattress from these guys too.

S
Sylvia Brown
Problem Solved!

I found this company while I was browsing on The Mattress Underground to find a solution for my hot memory foam mattress. Someone recommended to try a washable wool mattress protector to cool it down. The result was amazing! It regulated the temperature of my mattress and now I can sleep without breaking out in a sweat. It also adds a layer of comfort to my mattress and I love the fact that I can wash it in the washer. Highly recommend it!