Hiking Base Layers

A hiking base layer is an important part of the outdoor layering system. The layer you wear next to your skin should be lightweight and breathable. Whether you’re wearing a wicking base layer or thermals, base layers are key to being comfortable outdoors.
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Elate II Kids Skiing Baselayer Set

Elate II Kids Skiing Baselayer Set

In The Zone Kids' Base Layer Set

In The Zone Kids' Base Layer Set

£29 -31%
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The outdoor layering system is based on the theory that it’s easier to layer up or layer down than it is to simply wear one thick item of clothing. The base layer is the first layer of this system, and it's there to help regulate your body temperature and handle the moisture from your body. Breathable base layers help to wick away moisture to keep you dry and comfortable.


Winter base layers, or thermals, should be worn underneath an insulating midlayer such as a fleece jacket. And in adverse weather conditions, you can wear a protective layer over that such as a waterproof jacket. In our range, you’ll find base layer tops and bottoms for men, women, and kids so the whole family can enjoy the outdoors, whatever the weather.


Base layers are super versatile and come in different fabrics and styles suited to various climates, conditions and activities. They are often made from synthetic materials, but merino wool is a popular choice too. Derived from Merino sheep, lightweight merino wool base layers are favoured by outdoor enthusiasts because merino wool is very fine, soft, and naturally very breathable. It even has antibacterial properties, making it the perfect material for an outdoor base layer. Merino wool base layers will keep you warm in cool temperatures, and cool in warm temperatures.

At Decathlon, we have a wide range of base layers and thermals for the men, women, and kids. So whether you're looking to stay cool in a summer base layer for hiking, or warm in some cosy ski thermals, you're sure to find what you're looking for in our range.

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