A Sustainable & Unique Way to Share Your Brand
Looking for premium Merino wool custom socks for your business or organization? Our custom wool sock program offers a creative and effective way to showcase your brand on a pair of high quality Merino socks. Custom socks are ideal for nonprofit fundraising, brand awareness, special events and corporate gifting. Our high-quality Merino wool socks can be personalized with your logo or message, making them a memorable and functional promotional item.
Say NO plastic & cotton socks! Stand out while supporting your cause with a unique product that combines true comfort, performance, style, and sustainability.
Mount Washington Observatory
The Mount Washington Observatory is dedicated to advancing weather and climate research, fostering science education and preserving the heritage of the Mount Washington region. Situated atop Mount Washington, the observatory weathers some of the world’s most extreme conditions, providing valuable insights into weather patterns and climate trends.


For every MWOBS sock sold on Minus33.com, 10% of the proceeds will be donated to support the invaluable work conducted by the Mount Washington Observatory. MWOBS Socks
Knit In New Hampshire
We are proud to make all of our Mountain Heritage socks right here in Ashland, New Hampshire, on the historic ground of our original Mill from 1916. With over 108 years of woolen textile engineering & design experience, we make some of the most technically advanced and wool-rich socks on the market.

Certified Chemical & PFAS-Free
Our NH sock factory is OekoTex Standard 100 and Woolmark certified meaning our socks are free from toxic chemicals and only use premium wool. More Wool. Less synthetics. Healthier Planet!
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