Kaksi retkeilijää Svala-merinovillaisissa ulkoiluvaatteissa, tummissa kerroksissa ja repuissa, kulkee kivikkoisella polulla ruskaisessa tunturimaisemassa.

What is the Merino Extreme material?

Published 22.10.2026Reading time: 1 minIn category: Material guides

Versatile Merino Extreme

Svala’s versatile classic Merino Extreme is a fabric whose two-layer structure combines the natural properties of merino wool with technical performance. The inner layer is made of highly moisture-wicking polypropylene, while the outer layer is warm merino wool blended with a small amount of polyamide for increased abrasion resistance. Svala’s Merino Extreme collection is designed and manufactured in Kärsämäki, Finland. 

Merino Extreme in a nutshell

  • Efficient moisture transport 
  • Very warm 
  • Two-layer technical construction 
  • Naturally odour-resistant merino wool 
  • Flatlock seams do not chafe the skin 
  • Designed and made in Finland 

"I'm now ordering a second Merino Extreme base layer set to go with the ones I bought exactly two years ago, so I can rotate them between washing and airing. The set has seen heavy use when cycling and commuting. I've really liked the product."

Salonen J, satisfied customer

Svalan ulkoiluvaatteisiin pukeutunut henkilö istuu kivellä reppu selässään auringonlaskun aikaan, päässään punainen pipo ja yllään tumma asu

How can Merino Extreme work in both hot and cold conditions?

Svala’s unique two-layer construction makes Merino Extreme work all year round. The fabric does not feel too hot, yet it keeps you warm even in the coldest conditions – the same construction works just as well in a heatwave as in a hard frost. 

Merino Extreme keeps your skin dry and warm. Moisture moves efficiently away from your skin, so you do not feel cold even when you stop moving. The natural odour resistance of merino wool keeps the garment fresh from one wear to the next, and long-fibre merino wool does not itch like ordinary wool. 

The seams are flat flatlock seams, so the garment is comfortable to wear and does not press or chafe. The merino wool on the outer face is SuperWash-treated, which improves shape retention and wash durability. All substances used in dyeing and finishing meet the OEKO-TEX Standard 100. 

Svala petrolinsininen huppari, jossa on säädettävä huppu, korkeahko kaulus ja vetoketjullinen etutasku metsämaisemassa.

Merino Extreme performs both on the move and at rest

Merino Extreme is ideal as underwear or a mid-layer in changing weather. The collection is suitable for layering both at work and during leisure activities. As part of the Svala AIR System™ layering system, Merino Extreme functions as the Base Layer: its two-layer construction retains warmth during breaks and releases moisture during activity. 

Read more about the roles of the layers in our layering guide.

Svalan sininen merinovillainen pitkähihainen paita ja musta pipo näkyvät henkilön säätäessä reppua kivikkoisessa maastossa

What material is Merino Extreme made from?

Merino Extreme products are made from 75% mulesing-free merino wool, 22% polypropylene and 3% polyamide. The fabric weight is 200 g/m². 

The knit has a technical two-layer construction: the inner layer is highly moisture-wicking polypropylene and the outer layer is SuperWash-treated merino wool. 

Washing and care

The product does not need to be washed before use. The recommended washing temperature is 40 °C, preferably using a detergent suitable for wool. Reshape while damp and leave to dry. Airing the product between uses can extend the time between washes.

Svalan pyöreä tunnus, jossa lukee 100 päivän merinovillatakuu ja Svala of Finland.

100-day satisfaction guarantee

Our products have been developed over many years by leading professionals in collaboration with experts in various activities. We are so confident in the quality and comfort of our products that we can offer a 100-day satisfaction guarantee on all our products.

Use the product as normal for 100 days. If you are dissatisfied with the product for any reason, you will receive a refund.

Read more about the satisfaction guarantee

For all outdoor activities

Our products are designed for a wide range of activities. The same layers work for all sports and exercise where your body alternately cools down and warms up. Read tips from the people behind Svala and experienced enthusiasts.

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