Why natural fibers are so breathable

– and which wool truly cools, warms, and keeps you dry

Natural fibers are the undisputed all-rounders when it comes to breathability, temperature regulation, and comfort. Whether merino, alpaca, cotton, or linen – each fiber has unique properties that give it a clear advantage over synthetic fibers. But what exactly makes natural fibers so exceptionally breathable?

Why natural fibers breathe – the science behind it

Natural fibers possess a complex, organic structure that can absorb and release moisture while simultaneously regulating body temperature. Unlike synthetic fibers, which tend to trap moisture on the surface, animal fibers such as merino or alpaca actively wick away moisture and keep the skin dry.

1. Merino wool – the heroine of breathability

Merino wool can absorb up to 30 percent of its own weight in moisture without feeling damp. Its natural crimp creates fine air pockets that regulate body temperature.

Perfect for: sweaters, hats, baby knits, socks and outdoor knits.

Suitable yarns:
ggh Samson , Austermann Merino 105 , GOTS Step Merino 4 EXP Color

2. Alpaca wool – lightweight, insulating and temperature-regulating

The fiber is hollow inside. This allows alpaca to store heat in winter and simultaneously regulate temperature.

Perfect for: elegant sweaters, loops, scarves, fine accessories.

Suitable yarns:
ggh Baby Alpaca (100% alpaca wool) , Austermann Akina (virgin wool with alpaca wool), Austermann Briana (alpaca wool with cotton)

3. Cotton – breathable, lightweight and moisture-regulating

Cotton absorbs moisture well and feels pleasantly cool. Ideal for warm days and sensitive skin.

Perfect for: Tops, summer sweaters, crochet projects, home decor.

Suitable yarns:
ggh Tavira , Austermann GOTS Ecopure, Schoeller + Stahl Limone

4. Linen – King of Summer Fibers

Linen is the coolest natural fiber of all. It wicks away moisture extremely quickly and has antibacterial properties.

Perfect for: summer tops, shirts, light cardigans.

Suitable yarns:
Austermann Coolen Linen (linen with cotton and viscose), ggh Linova (cotton with linen), Austermann Cornwall Linen (virgin wool with linen)

5. Blended yarns – clever combinations with added value

Many modern fibers combine cotton, alpaca or merino to combine the best of all worlds: lightweight breathability, stability, less pilling, clear stitch definition.

Examples:
Austermann Akina (Merino + Alpaca), Austermann Svea (Cotton + Baby Alpaca)

Conclusion: Natural fibers beat synthetic fibers in every category

For those seeking dry skin, pleasant warmth, cooling during activity, and maximum comfort, natural fibers are unbeatable. Whether you're active in sports, going about your daily life, taking a winter walk, or knitting baby clothes – natural fibers regulate, protect, and provide year-round support.