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SmartWool Features & Highlights


The SmartWool Advocacy Fund

The SmartWool General Advocacy Fund supports non-profit organizations that get kids into the outdoors while educating them about environmental stewardship. Since 2005, more than a million dollars has been raised and granted through the e-commerce outlet, which has provided 100% of the SmartWool Advocacy Funds since its inception. Through your online purchases, you have helped us donate more than a million dollars to organizations like The Womens Wilderness Institute and Outdoor Outreach, among many others.

SmartWool PhD Socks

Whatever your trail, the PhD Outdoor sock collection is made for mileage. Bi-elastic construction for focused fit, flex, and recovery create a sock that stays exactly where you need it to be. And our patented ReliaWool™ technology provides superior durability for socks that’ll go more miles than your shoes.

NTS Micro 150 Shirt

It’s light, it’s versatile, it packs up small. This do-everything Merino tee is ready for everything you throw at it and more. Merino naturally regulates body temperature, moisture, and odor so you can wear it as a baselayer or as a stand-alone piece in warmer temps.

SmartWool Celebrates 20 Years

As SmartWool hits the 20 year milestone, we reflect on the past, present and future of the company. As well as give thanks to YOU, the many Fan Field Testers, for making it all possible.

Made in the USA

SmartWool is proud to say that its socks are made here in the United States.

SmartLoft Featuring Griffin Post

SmartWool Fan Field Tester & Big Mountain Skier Griffin Post explores the backcountry with his PhD SmartLoft Divide Full Zip.
About SmartWool

Since the 12th century, Merino wool has been one of the world's most sought after commodities. Until the 18th century, export of one of these prized sheep from Spain was a punishable offense. Thankfully, though, this is no longer the case, and the pedigree of Merino remains just as it was centuries ago. You needn't buy Merino yarn in tonnage exclusively from the nobility of Southern Europe; instead, it's readily available from brands like SmartWool.

These daysm, the lush, jagged mountains of New Zealand play host to the majority of the world's Merino sheep, and the same holds true for SmartWool. It works with small, experienced growers in this region to ensure the best quality yarn, which is vital given that a Merino sheep is only shorn once per year. And to add some perspective, one sheep's wool equates to only 40 pairs of SmartWool socks or seven mid-weight base layers. For this reason, every sheep is considered precious; meaning that SmartWool lives by the ethos that good wool requires a happy sheep. That's why SmartWool pioneered the ban of Muesling sheep in New Zealand and refuses to source from any growers that practice this technique of wool removal. It was also the first to extend long-term contracts to growers, providing a sense of security that enables them to continue extending quality care and supervision.

This care and supervision is extremely important when you take into account that the SmartWool flocks require an extraordinary amount of care. In order to produce its tights, gloves, hats, and running socks, the Merino sheep are bred and nourished to produce wool with a very specific thickness, length, and color. This plays well to quality control, but the strong oversight also ensures an ethical treatment of the animals, as well as an ethical business practice around the globe.

Continuing this philosophy, you'll find that 90% of SmartWool's products are knit in America. Your favorite slippers, beanie, pants, or mittens are all ethically produced in encouraging work environments. This means that you get a product that's made with love—from start to finish. But the question begs to be asked: Why wool in the first in the first place? Merino wool, specifically, is naturally hydrophobic, highly breathable, and antimicrobial. In other words, it truly is the "smart" wool. Merino's engrained characteristics lend themselves perfectly to products like the t-shirt and sock, because merino fibers wick and breathe better than most engineered synthetic fibers, while also neutralizing odors and providing a softer hand against the skin.

Sure, getting to the finished product isn't easy, but SmartWool wouldn't have it any other way. The end result is, after all, a remarkable thing to behold–a natural product, with an ethical footprint, that outperforms nearly every synthetic on the market. It doesn't get much better than that.


4.9 5.0 530

The products from SmartWool have an average rating of 4.9 / 5.0 from 530 reviews.