With temperatures dipping below zero, keeping warm outdoors is essential. Layering is a great way to combat winter chills and stay cosy, but thermals provide an even better solution.

This guide covers what thermals are, how they work and how they differ from base layers. We’ve also included our top tips for styling thermals so you can stay warm and on-trend throughout winter.

What is thermal clothing?

Thermals are a winter wardrobe staple, whether vests, t-shirts, leggings, tights or socks. They’re typically made of synthetic fabrics, like polyester, smart cotton, Thermolactyl or Evolutyl, and can be worn as a base layer or on their own.

They serve two purposes: to keep the cold out and maintain your body temperature. They trap more heat than regular clothing, insulating your body and preventing heat loss.

What is base layer clothing?

Base layer clothing is the closest layer to your skin, acting as a ‘second skin’. These pieces add warmth while absorbing and evaporating sweat (also known as ‘wicking’), helping you stay comfortable, whatever the weather.

Base layers are typically made of synthetic fabrics or merino wool. The former is lightweight and quick-drying, perfect for high-energy outdoor sports. The latter is ideal for hiking, as it maintains your body temperature without causing you to overheat. Base layers should feel tight against your skin while allowing you to move freely.

Base layers vs thermals

You may think that thermals and base layers are the same, but there is an underlying difference: not all base layers have thermal properties. Below is a breakdown of their characteristics.

Moisture-wicking properties

Both base layers and thermals have moisture-wicking properties, preventing sweat from passing through your skin. Moisture pushes through the fabric onto the outer surface, where it evaporates.  

Warmth

Thermals provide more warmth than base layers because they’re made with smart materials that keep moisture and cold air away.  

Fabric weight

At Damart, our thermals come in three fabric grades: soft warmth, medium warmth, and intense warmth:

• Soft warmth. A light layer perfect for milder days. This grade provides less heat retention and moisture-wicking properties than the others.
• Medium warmth. This medium-weight fabric keeps the heat in and wicks moisture away from the skin to keep you dry. Wear it alone with your favourite coats and jackets or as a base layer under your clothing.
• Intense warmth. The most insulating thermal grade we offer. These pieces provide the best heat retention and maximum moisture-wicking.

How to style thermals

Thermals are versatile and cosy, perfect for styling under your favourite jeans or jumper on colder days.

Our women’s thermal vests are a great base layer under dresses or knitwear, while our short and long-sleeve thermal tops can be layered under a sweatshirt on casual days.  

At Damart, we have thermal nightwear for relaxing nights in and women’s thermal underwear that’s comfortable, soft and stylish.

If you want to learn more about thermals and how to style them, check out these related articles on our blog:

• How to style thermals
• How to style jumpers all year round