Hirsch-Natur is a German organic textile company specializing in merino wool socks and hosiery for the whole family — from newborns through adults. Founded with a commitment to the simplest form of sustainable clothing, Hirsch-Natur has spent decades mastering a single category: socks that are genuinely good for your feet and the planet.
Every Hirsch-Natur sock is made from GOTS-certified organic merino wool sourced from non-mulesing farms. Critically, the wool is left as close to its natural state as possible — no chlorine treatment, no synthetic anti-shrink coatings, no artificial softeners. This matters because most conventional merino socks, including many marketed as natural or premium, undergo a superwash chlorine process that makes them machine washable but strips away the fiber's natural breathability, moisture management, and thermal properties. Hirsch-Natur skips this process entirely, preserving everything that makes merino wool worth wearing. The result is a sock that breathes better, regulates temperature across seasons, and becomes softer with each careful wash. All production takes place in Germany.
At EcoAble, we carry Hirsch-Natur's baby, kids, women's, and men's sizes — a complete family range in untreated organic merino.
Hirsch-Natur is a German organic textile company specializing in merino wool socks and hosiery for the whole family — from newborns through adults. Founded with a commitment to the simplest form of sustainable clothing, Hirsch-Natur has spent decades mastering a single category: socks that are genuinely good for your feet and the planet.
Every Hirsch-Natur sock is made from GOTS-certified organic merino wool sourced from non-mulesing farms. Critically, the wool is left as close to its natural state as possible — no chlorine treatment, no synthetic anti-shrink coatings, no artificial softeners. This matters because most conventional merino socks, including many marketed as natural or premium, undergo a superwash chlorine process that makes them machine washable but strips away the fiber's natural breathability, moisture management, and thermal properties. Hirsch-Natur skips this process entirely, preserving everything that makes merino wool worth wearing. The result is a sock that breathes better, regulates temperature across seasons, and becomes softer with each careful wash. All production takes place in Germany.
At EcoAble, we carry Hirsch-Natur's baby, kids, women's, and men's sizes — a complete family range in untreated organic merino.
Buying guide
Most merino socks — even premium ones sold as natural or organic — undergo a superwash chlorine treatment to make them machine washable. Hirsch-Natur does not. Here is why that matters, and what it means for how you use and care for their socks.
What superwash treatment removes
The superwash process uses chlorine to chemically flatten or remove the natural scales on each wool fiber. This prevents felting in the wash — but it also reduces breathability, weakens the fiber's natural moisture-wicking performance, and leaves chemical residues in the fabric. Many people with sensitive skin or wool sensitivities are reacting to the treatment, not the wool itself.
What untreated wool preserves
Hirsch-Natur's untreated merino retains its full natural fiber structure — which means better breathability, better temperature regulation in both cold and warm conditions, and better moisture management. The natural fiber scales also give untreated wool its characteristic softening behavior: it gets noticeably softer with each careful wash, rather than gradually degrading.
Sizing
Hirsch-Natur socks are sized by EU shoe size, with adult sizes labeled XS through XL. Baby and kids sizes are listed by EU size range directly on each product page.
Adult sizing
XS — EU 35–38 (US Women's 5–7.5)
S — EU 39–42 (US Women's 8–11 / Men's 6–9)
M — EU 43–46 (US Men's 9.5–12)
L — EU 47–50 (US Men's 12.5+)
Baby & kids sizing
Baby and kids sizes run from EU 16–17 (newborn) through EU 30–31 (approximately age 5–6). Each product listing shows the specific EU size range available for that style. When between sizes, choose the larger size — wool socks with natural stretch wear more comfortably with a little room than when pulled tight.
Who it's for
Sensitive skin & eczema
Untreated, chemical-free merino is among the gentlest sock options available for people with skin sensitivities, contact dermatitis, or eczema. If you or your child have reacted to wool socks before, it is worth trying untreated merino — the reaction is often to the chlorine treatment or synthetic finishes, not the wool fiber itself. Hirsch-Natur socks contain none of either.
Year-round wear
Merino wool is naturally temperature-regulating, which means it keeps feet warm in cold conditions and helps them stay cool and dry in warm ones. Hirsch-Natur's lighter-weight styles work well in spring and summer for anyone who struggles with sweaty feet or foot odor — wool naturally inhibits the bacteria that cause odor, so feet stay fresher for longer than in cotton or synthetic socks.
Completing a chemical-free wardrobe
If you are already using Engel, Disana, or Reiff clothing, Hirsch-Natur socks complete a fully organic, untreated wardrobe from head to toe. All four brands share the same core standards: GOTS-certified organic wool, no harsh chemical processing, made in Germany. Hirsch-Natur is simply the specialist in the one category the other brands do not cover.
Babies & new walkers
Soft, chemical-free socks are especially important for babies and new walkers whose skin is more permeable and sensitive than adults'. Hirsch-Natur's baby sizes start from newborn and the wool's natural breathability helps regulate foot temperature during sleep and during the day. Unlike synthetic socks, merino wool does not trap moisture against the skin.
Care
Because Hirsch-Natur socks are not superwash treated, they require a little more care than conventional merino socks — but less washing overall, since wool naturally resists odor.
Washing
Hand wash or machine wash on a gentle wool cycle in cool water. Use a wool-safe, enzyme-free detergent. Avoid agitation, wringing, or hot water — all of which can cause felting in untreated wool. Lay flat to dry. Do not tumble dry.
How often
Wool's natural odor resistance means Hirsch-Natur socks rarely need washing after every wear. Air them out between uses. Wash when visibly soiled or when airing out is no longer enough. With proper care and infrequent washing, these socks last for years.
For full wool care instructions, see our complete wool washing guide →
FAQ
Hirsch-Natur socks can be machine washed on a gentle wool cycle in cool water with a wool-safe, enzyme-free detergent. Because they are not superwash treated, they are more sensitive to heat and agitation than conventional merino socks — avoid hot water, fast spin cycles, and tumble drying. Lay flat to dry. With proper care they are long-lasting and become noticeably softer with each wash. See our complete wool care guide →
Most merino socks — including many sold as premium or natural — undergo a superwash chlorine treatment that chemically flattens the wool's natural fiber scales to prevent felting in the machine. This makes them easier to wash but reduces the fiber's breathability, moisture-wicking performance, and natural insulation. Hirsch-Natur skips this process entirely, leaving the wool in its natural state. The result is better temperature regulation, better moisture management, and a sock that softens with use rather than gradually degrading.
Hirsch-Natur holds GOTS (Global Organic Textile Standard) certification. Their merino wool is sourced from non-mulesing farms and processed without chlorine treatments, synthetic anti-shrink coatings, or artificial softeners. All production takes place in Germany.
Yes. Hirsch-Natur makes socks for the whole family, from newborn through adult. Baby sizes start at EU 16–17 and kids' sizes run through EU 30–31 (approximately age 5–6). Each product listing shows the specific EU size range available for that style.
Yes. Merino wool is naturally temperature-regulating — it keeps feet warm in cold conditions and helps them stay cool and dry in warm ones. Wool also naturally inhibits the bacteria that cause foot odor, making it a better choice than cotton or synthetic socks for anyone who struggles with sweaty feet. Hirsch-Natur's lighter-weight styles work well year-round.
It is worth trying. Many people who experience irritation from wool socks are reacting to the superwash chlorine treatment or synthetic finishes, not the wool fiber itself. Hirsch-Natur socks are untreated and free from these chemicals. Fine merino fibers (typically 17–20 microns) are also much softer than the coarse wool fibers responsible for the itchy reputation. If you have eczema or contact dermatitis, chemical-free merino is one of the most recommended natural sock options available.
Adult Hirsch-Natur socks are sized XS through L by EU shoe size: XS fits EU 35–38 (US Women's 5–7.5), S fits EU 39–42 (US Women's 8–11 / Men's 6–9), M fits EU 43–46 (US Men's 9.5–12), and L fits EU 47–50 (US Men's 12.5+). Baby and kids sizes are listed by EU size range on each product page. When between sizes, choose the larger size. See our full sizing guide →
