Best merino wool clothing brands
Merino wool has a narrower fiber diameter than standard wool — typically 15 to 24 microns — which is what makes it soft against skin rather than scratchy. That fineness also creates exceptional temperature regulation. Merino adapts to a wide range of conditions, wicking moisture in warm weather and insulating in cold, which is why it is used for everything from base layers to everyday T-shirts to sweaters.
Odor resistance is merino's other major practical advantage. The fiber's natural lanolin content inhibits bacterial growth, which means a merino garment can be worn multiple times between washes without developing the odor that synthetic activewear picks up quickly. For travel, outdoor use, or everyday wear where laundry frequency matters, this is a meaningful difference.
On certifications: ZQ Merino and the Responsible Wool Standard (RWS) are the two most credible signals for responsible sourcing. ZQ covers animal welfare and environmental management across New Zealand and Australian farms. RWS prohibits mulesing and requires sustainable land management practices. Both follow the wool through the supply chain.
The brands below make clothing in merino wool and are listed in The Plain Thread directory.
Canadian women's natural fiber clothing in linen, merino, silk, and organic cotton.
Travel-focused casual clothing made from linen, organic cotton, merino, and alpaca.
Outdoor basics and activewear in merino wool and organic cotton for men and women.
American-made men's wardrobe staples in Supima cotton, linen, hemp, and merino.
Sydney-made custom-fit organic cotton, hemp, and merino clothing for men and women.
Vermont-made merino wool socks for men, women, and kids with a lifetime guarantee.
Women's premium apparel in organic linen, Pima cotton, and merino with a take-back program.
UK surf and outdoor brand making apparel in organic cotton, hemp, and merino.
Canadian casual and basics brand in organic cotton for men and women.
Cashmere and merino knitwear for men and women at mid-market prices.
New Zealand merino wool outdoor base layers and apparel for men, women, and kids.
Norwegian women's activewear brand making merino wool base layers and technical clothing for outdoor sports.
Fair Trade knitwear in cotton, linen, alpaca, and merino for women.
Merino wool outdoor apparel for men and women with a Himalayan-inspired aesthetic.
French sustainable knitwear brand making merino, alpaca, and organic cotton sweaters, cardigans, and vests for everyday wear.
French premium knitwear in organic cotton, merino, mohair, alpaca, and yak for men and women.
100% New Zealand merino wool base layers and travel clothing for men and women.
New Zealand ZQ merino wool ski and outdoor apparel for men and women.
Merino wool and organic cotton clothing for babies through age 14.
Outdoor brand making apparel in organic cotton, hemp, and merino wool with strong environmental advocacy.
Full-range organic brand offering clothing and underwear in organic cotton, linen, hemp, and merino.
Luxury knitwear brand offering cashmere and merino wool sweaters, cardigans, and accessories for women.
Men's activewear and underwear in organic cotton and merino wool.
Merino wool socks, base layers, and outdoor apparel for men, women, and kids.
Japanese outdoor brand making merino wool and natural material apparel for men and women.
Spanish casual basics in hemp, organic cotton, and merino for men and women.
Merino wool travel clothing for men and women designed to be worn for weeks between washes.
Women's ZQ merino wool dresses engineered to be worn for 100 days without washing.
Everyday merino wool women's clothing including dresses, tops, leggings, and outerwear designed for all-day versatility.
UK knitwear brand in merino, cashmere, linen, cotton, and silk for men and women.
Merino wool activewear and base layers for men and women at mid-market prices.
What makes merino wool different from regular wool?
Merino wool comes from merino sheep and has a significantly finer fiber diameter than standard wool — typically 15 to 24 microns, compared to 30 or more microns for coarser wools. That fineness is what makes merino soft against the skin rather than itchy. The fine fibers also create more surface area, which improves moisture wicking and temperature regulation. Merino adapts to a wider temperature range than most fabrics and resists odor buildup over multiple wears, which coarser wool does not do as effectively.
Is merino wool worth the price?
For regular use, yes. Merino wool costs more than cotton or synthetic equivalents, but it performs in ways neither can match. A merino base layer works in cold weather and mild summer conditions. A merino T-shirt worn daily can go multiple days between washes without developing odor — which reduces laundry frequency and extends garment life. Merino also resists pilling better than acrylic and biodegrades at end of life. The cost-per-wear over several years is often lower than cheaper alternatives that degrade faster.
Can you wash merino wool in a washing machine?
Most merino clothing today is machine washable. Use a gentle or wool cycle with cool water and a wool-safe detergent. Avoid hot water, which causes felting and irreversible shrinkage. Do not tumble dry on high heat — air-dry flat or on low heat. Some merino garments will note they are hand-wash only; follow the care label. Treated merino (sometimes called "superwash" merino) is more washing-machine tolerant but involves a chemical treatment that removes the fiber's natural scales — worth knowing if you are buying for sustainability reasons.
What micron count is best for merino clothing?
Lower micron count means finer, softer fiber. For clothing worn next to skin — T-shirts, base layers, underwear — look for merino under 18.5 microns, which qualifies as ultrafine and is comfortable for most people sensitive to wool. 18.5 to 21 microns is fine merino, suitable for everyday tops and light knitwear. 21 to 24 microns is superfine or standard merino, good for mid-layers and outer garments where the wool is not in direct contact with bare skin. Above 24 microns begins to feel scratchy for most people.
Is merino wool good for summer?
Yes — lightweight merino works well in summer. Merino's temperature regulation works in both directions: it keeps you warm in cold conditions and helps cool you in heat by wicking sweat away from the skin and allowing it to evaporate. Lightweight merino (under 150g/m²) is genuinely comfortable in warm weather and much less prone to odor buildup than synthetic activewear. Many travelers use merino T-shirts for exactly this reason — they can be worn multiple days, washed in a sink, and dry overnight.
See all merino clothing brands in the directory, ranked and filtered by tier.
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