The best (and worst) fabrics to keep you warm (2024)

Cold weather is a chance for us to layer up and look runway-chic. There’s also the danger of looking like that marshmallow man from Ghostbusters — and still, be cold! The trick, we discovered, is to wear the right fabrics in the right order for ultimate coziness in the winter.

Below is our shortlist of the best (and worst) fabrics to keep you warm and how to care for them. After all, no one likes a shrunken sweater!

Base layer

Silk

Why silk keeps you warm: The saying ‘smooth as silk’ originated somewhere! This super-soft natural fabric is hypoallergenicand an incredible insulator — a great choice as your base layer.

Silk care tip: Turn inside out and place in a mesh bag if machine washing (on a delicate cycle). Also, try and remove silks as soon as the cycle ends to reduce wrinkles.

Middle layer

The best (and worst) fabrics to keep you warm (1)

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Wool

Why wool keeps you warm: Ever seen a cold sheep? Not likely. That’s because wool — and woolen fabric like tweed and flannel — is an excellent insulator. It regulates heat and repels the cold by trapping air in tiny pockets. Rain droplets bead and run off fluffy wool. And if water does soak through, wool can absorb a third of its weight in water before feeling soggy. Merino wool is crowned queen for staying toastiest.

Wool care tip: Different wool needs different care! Use our guide to washing every kind of wool to avoid shrinkage. but as a general rule, turn woollies inside out and place them in a mesh bag if machine washing.

Cashmere

Why cashmere keeps you warm: Superior to wool, according to some. We say, different fabrics for different folks. Like wool, cashmere is a natural, breathable material. Its extra-fine weave makes it especially good at insulating. Even when it’s freezing.

Cashmere care tip: If handwashing, don’t wring out your cashmere. It can stretch the delicate fabric. Get all our tips on treating your cashmere with care here.

Outer layer

Faux down

Why down keeps you warm: Synthetic and plant-based down mimics traditional down’s impressive insulating properties by trapping air. Rather than real feathers, cozy plant-based down is engineered from all kinds of materials: bamboo, wood fiber… even wildflowers!

(Plant-based) down care tip: If machine washing, use a front-loading machine rather than a top-loader. It’s gentler on the fabric. Always read the label.

Faux fur

Why fur keeps you warm: Are we faux real when we say synthetic fur keeps you warm in winter? Yup! The tiny hairs keep rain and snow near the surface of the coat and help insulate, too.

Faux fur care tip: Handwashing is best. Then, lay your faux fur flat in its natural shape on a drying rack or hang to dry. Don’t tumble dry.

Fabrics that won’t keep you as warm

Cotton: Although it’s natural, cotton doesn’t insulate or wick moisture well. Increasing your chance of being wet and cold. Achoo!

Synthetic fibers (if you’re exercising): Man-made fabrics like polyester and acrylic don’t breathe. They trap heat and make you sweat. Not ideal in cold weather!

The best (and worst) fabrics to keep you warm (2)

If you want to reduce your carbon footprint, consider buying clothing second hand, from a vintage store, or an ethicalbrand. If you opt for new items, go with high-quality pieces that last. Contributing less to fast fashion.

Most importantly, stay cozy in your winter layers – and stylish!

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The best (and worst) fabrics to keep you warm (2024)

FAQs

What fabric keeps you the warmest? ›

1. Wool. Wool is a great material and a natural fiber to wear during winter when the temperature drops because it keeps you warm by trapping air close to your skin. Wool is also a breathable and odor-resistant fabric that regulates body heat and prevents overheating when wearing too many layers.

What type of fabric should be avoided for cold weather wear? ›

"Avoid cotton as a base layer as it absorbs water and moisture, which will get cold, and your body heat will be absorbed by it. Cotton-blend fleece can be a great mid-layer and in milder (not wet) weather it can also be a good outer layer," shares Avery.

What fabric is best for extreme cold? ›

Fleece. Fleece stands out as a prime contender for cold-weather comfort, thanks to its impressive insulation capabilities. This fabric boasts a unique napped surface that not only feels soft against the skin but also traps heat efficiently to keep you snug even on the chilliest days.

What fabric retains the most heat? ›

Wool and nylon had the highest temperatures throughout the tests while the control, cotton and silk had lower temperatures. It is best to wear either wool or nylon clothing during cold weather because they will retain a body's heat better than cotton or silk.

What materials keep you warm 100 years ago? ›

"Your base layers — the layers closest to your body — would be all cotton or linen, sometimes wool … you're looking at adding a lot of layers to your body, because the more layers you add on that traps in that warm, warm air that your body is giving off."

What is the best cloth to keep you warm? ›

Wool. One of the most popular natural materials for winter clothing, wool will keep you warm in the coldest of weather. There's a reason so many sweaters are made of wool—it's both toasty and comfortable. For winter activewear, wool is a great choice.

What not to wear during winter? ›

Some fabrics are not thick enough or do not protect you from the cold wind. Try to choose lined clothing and accessories to help keep you warm. You should also try to avoid cotton, as it is a fabric that does not dry easily and may end up making you feel colder. Invest in proper outdoor clothing.

What fabrics should be avoided in hot weather? ›

Avoid synthetic materials such as polyester and nylon in the heat; they can trap heat and moisture close to your skin which may cause discomfort or skin irritations.

Which fabric protect us from cold? ›

Wool Fabric

For one, wool is a great insulator, which means it keeps you warm in cold weather.

What material holds cold the best? ›

Styrofoam is the best insulator for preventing ice from melting.

Why not wear cotton in winter? ›

“Cotton kills”

As the air pockets in the fabric fill up with water, it ceases to provide insulation. A damp layer of clothing against the skin pulls heat away from the body and can rapidly lower body temperature. Furthermore, wet, cotton clothing takes much longer to dry than comparably weighted synthetic fabrics.

What fabric has a cooling effect? ›

Some common examples of cooling fabrics include: Bamboo fabric. Silk (which is known for its ability to regulate body temperature) Fleece (which traps air between layers of fabric)

What material stays warm the longest? ›

Our research found that the warmest material is wool, with thicker Icelandic wool being even better, and a wool-acrylic blend being somewhere in the middle. The warmest clothing for you will be dictated by the number of layers you can use, and the thickness of the materials you are wearing.

What is the best fabric for extreme heat? ›

Best Fabrics To Keep You Cool
  • Cotton: A Lightweight Summer Favorite. ...
  • Linen: For Cool Air Flow. ...
  • Rayon: A Surprisingly Reliable Choice. ...
  • Chambray: For Sophisticated Summer Style. ...
  • Silk: Hypoallergenic Summer Wear. ...
  • So, What Fabrics Don't Work So Well?

What material keeps heat the most? ›

Materials such as concrete, bricks and tiles absorb and store heat. They are therefore said to have high thermal mass. Materials such as timber and cloth do not absorb and store heat and are said to have low thermal mass.

Which of these fabric is warmest? ›

Cashmere, wool, in particular , is an excellent fabric , as it's warm , breath able and moisture – wicking – plus. It's not as prone to retaining odors. However, it is not as affordable and need a lot of care when it gets dirty.

What material is best for warm weather? ›

Cotton stands out as a top-notch choice for scorching summer days. Its unique fiber structure not only lets your skin breathe but also absorbs perspiration, leaving you comfortably dry.

What is the best fabric insulator of heat? ›

Aerogel is more expensive, but definitely the best type of insulation. Fiberglass is cheap, but requires careful handling. Mineral wool is effective, but not fire resistant. Cellulose is fire resistant, eco-friendly, and effective, but hard to apply.

What is the warmest thing to wear? ›

Wool or wool blends - natural fabrics for warm clothing

Woollen clothes are well known to keep you warm as the material consists of approx. 85 percent air, which is why this natural material stores heat so well. This is why it is such a popular clothing material for the winter months.

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