Thermal Clothing: Your Essential First Layer for Sports

The secret to enjoying your favorite outdoor activities during the winter isn't layering up more, but layering up better. Thermal clothing , also known as a base layer, is the foundation of good gear. Its job is to keep your skin dry and retain your body heat, ensuring a constant feeling of comfort no matter the cold or the intensity of your exercise.

How Does Thermal Underwear Work?

Unlike a conventional cotton T-shirt that absorbs and retains sweat, cooling the body, thermal clothing performs two vital functions:

• Sweat-wicking: It's made with technical fabrics that don't absorb moisture, but instead wick it away from the skin to the outer layers for evaporation. This keeps your skin dry.
• Thermal insulation: Its fibers create a thin layer of warm air around your body, acting as a natural insulator that retains your own heat without the need for bulky clothing.

Choose the Perfect Thermal Clothing for You

The choice of material is crucial and depends on the intensity of your activity and your budget. At Caranva, you'll find the two best options on the market so you can build your ideal equipment.

Our Collections:

• Thermal Tops: Available in long and short sleeves, and with a zip-up neck for extra ventilation. They're essential for protecting your core, which is where the most heat is lost.
• Thermal Tights: Protect your legs from the cold with long or capri-length tights. They're perfect for wearing under your ski, trekking, or cycling pants.

Material Type	Ideal For	Main Advantages	To Consider
Synthetic Fibers (Polyester, Polypropylene)	High-intensity activities such as skiing, running or cycling.	Highly breathable, ultra-fast drying, durable and more economical.	They can retain odors more easily after intense use.
Merino wool	Activities of varying intensity, long hours, or very cold climates.	Excellent thermal regulation (heat even when humid), natural antibacterial (no smell), very soft to the touch.	Slower drying time and higher price than synthetic fibers.

Frequently Asked Questions about Thermal Clothing

Does thermal clothing have to be very tight?

Yes, thermal clothing should fit snugly against the body, like a second skin, but not too tight or restricting movement. This fit is crucial for efficient sweat wicking and the creation of an insulating layer of air that keeps you warm.

For which sports is thermal clothing recommended?

It's a fundamental garment for any activity in cold climates. It's essential for sports like skiing and snowboarding , but also highly recommended for mountaineering, trekking, winter running, cycling , or even working outdoors in winter.

How should I wash my thermal clothing so that it doesn't lose its properties?

Wash it in the washing machine using a synthetic or delicate cycle, always in cold water (maximum 30°C). Use a neutral detergent and avoid fabric softener, as this product saturates the fibers and drastically reduces breathability. Always air dry.

Can I wear a cotton t-shirt as a first layer?

Not recommended. Cotton is a fabric that absorbs and retains moisture. As soon as you sweat, the shirt will soak through, cooling you down quickly and causing you to lose body heat, increasing the risk of hypothermia. Always wear synthetic or merino wool technical clothing.