Shop our Merino Wool Collections
Minus33 offers sustainable men's and women's merino clothing that includes base layers, mid-layers, outer layers, underwear, headwear, and socks for any activity. Shop microweight, lightweight, midweight, and heavyweight.
Men's Summer Favorites
Beat the heat with our microweight merino wool clothing. From breathable underwear and socks, to tees and polo shirts, check out some of our best selling men's merino clothing for summer.
Women's Summer Favorites
Our women's microweight merino wool clothing is designed to keep you cool and comfortable wherever your next adventure takes you. Experience the natural softness & anti-odor properties of merino.
More Wool. Less Synthetics. Healthier Planet. Healthier You.

Socks Made in the USA
We manufacture our Mountain Heritage Sock Collection right here in Ashland, New Hampshire - USA. Choose from over 30 styles of premium Merino wool ski socks, snowboard socks, hiking socks and more.
Wool Experts Since 1916
Nobody knows wool like we know wool. Since 1916 we have been manufacturing fabrics that perform to our standards for softness, durability,color consistency and more.
Merino Wool Fabric Weights
From the extreme cold to warmer conditions - 4 different Merino wool fabric weights give you plenty of options for year-round wool wear. Click here to Learn which weight is best for you.
Merino Wool Benefits
Say goodbye to the stereotypes you may have heard about old school wool, and say hello to super soft, comfortable, easy to care for Merino wool. Qualities like high insulation and low air permeability make Merino wool a performance favorite for outdoor apparel, socks and thermal base layers.
Comfort Benefits
- Natural Insulation
- Super soft & non-itchy
- Naturally Moisture Wicking & Breathable
- Naturally Flexible & Resilient
- Odor Resistant
Safety Benefits
- Certified PFAS / Chemical Free
- Fire Resistant/Flame Retardant
- UV Protection
- Insulates When Wet
- Non-allergenic
Environmental Benefits
- Renewable & Sustainable
- Recyclable & Biodegradable
- Anti-Microbial & Anti-Odor
- Durable & Sustainable
Machine Wash & Dry
Minus33 Merino Wool is also machine washable and dry-able, thanks to Total Easy Care technology. Developments initiated by Australian Wool Innovation and the Woolmark Company have delivered Merino Wool garments that are no longer hand-wash only. Learn all about caring for merino wool.