Warm without being thick. Dry without being synthetic. The 4-season trail sock with 161 five-star reviews — now in three styles so you have the ultimate comfort no matter the season or activity.
Same bison fiber blend. Same reinforced construction. Same factory. Customers call them "warm without being thick" — now in three styles so you have the ultimate comfort no matter the season or activity.
Try them for 30 days. If you don't love them, we'll give you a full refund — and cover return shipping. We're that confident because we know what happens: people try one pair and come back for more. 1 in 4 reviewers bought multiple pairs.
Tested from 40°F to 95°F. Warm in winter, cool in summer — customers are shocked every time.
"Took them off and my feet were completely dry. I was amazed." Moisture wicking that actually works.
Reinforced heel, toe, and sole with a flat toe seam. Hikers say blisters stopped completely.
Thin enough for sneakers, warm enough for boots. The #1 thing customers mention in reviews.
Bison grow an underlayer of ultra-fine fiber that insulates against extreme cold and breathes in summer heat.
We collect that fiber from ranches in Alberta before it gets thrown away, blend it with wool and nylon, and knit it into a sock that performs in every season. No synthetic coatings. No chemical treatments.
Our factory has been knitting socks since 1900. The Trail Sock uses reinforced heel, toe, and sole construction with ribbed compression at the cuff and ankle.
Same build whether you pick crew, quarter, or low cut. The only thing that changes is the height.
Every United By Blue product funds community cleanup events. Over 4 million pounds of trash removed from oceans and waterways to date.
Zero single-use plastic in our packaging. Certified B Corporation. Climate Neutral certified.
1 in 4 reviewers mention buying multiple pairs. Here's why.
"Other wool blend socks I have tried are thick and itchy, but these are very comfortable and look great. They are warm without being thick, and the toe cushioning feels like a dream. Best of all, they help regulate my feet temp; prevent me from being too sweaty or cold. I already want a second pair!"
"I work in air quality management and am outside for long hours, high in the air. Cold feet are the worst. These are the best wool socks I've ever owned. Not too hot, not too cold. After trying the first two pairs, I immediately bought four more!"
"I hike every weekend, usually between 8-12 miles and these feel so good. So comfortable and soft, they stay up never slipping. I've worn them in the heat and I stayed cool and I've worn them in the cold and I stayed warm."
"These are my absolute favorite socks for hiking or wearing for everyday in the cooler months! I've had mine for about two years and they've been holding up great. Finally bought a pair for my partner and now they're the only socks he'll wear with his leather boots."
"Relatively expensive but totally worth it. I wore them all day, and normally my feet get sweaty, especially when wearing wool socks. But I took them off and my feet were completely dry. I was amazed."
"Originally purchased one pair for my husband. He loved the socks — we call them 'the flexible sock.' They naturally regulate temperature and your feet stay warm when wet. I ended up buying 4 more pairs for gifts this year."
Every pair starts on a ranch in Alberta and ends up on your feet. No shortcuts, no overseas manufacturing.
Alberta, Canada
Kings Mountain, NC, USA
High Point, NC, USA
