ISW Isolwool® Trail Cuff (3 pair pack)
Keeps feet dry and comfortable
Durable in all conditions
Made in North Carolina, USA
Free US Shipping over $80
30-Day Easy Returns
Description
Reinforced Trail Cuff? Check.
The new ISW is a power-packed running sock built for the trail and beyond. Constructed with Isolwool®, the ISW utilizes merino wool and polypropylene to deliver superior moisture movement. A light cushion prevents blistering and enables prolonged performance in the harshest conditions. Wool naturally fights bacteria allowing the sock to remain clean and fresh. The ISW is designed to perform in hot or cold environments - and to excel on the trail.
39% Merino Wool, 39% Polypropylene, 20% Nylon, 2% Spandex
Size Guide
| Size | Fits Shoe Size (US) |
| Small | 4-6 |
| Medium | 7-10 |
| Large | 10-13 |
| X-Large | 13-15 |
Notes:
- Unisex sizing: These socks are designed to fit both men and women.
- If you're between sizes, we recommend selecting the larger size for a more comfortable fit.
- For the best fit, match your sock size to your US shoe size.
If you have any questions about sizing, our customer service team is here to help!
Shipping & Returns
Orders ship in 1-3 business days, with free U.S. shipping on orders over $80 and tracking provided via email. Delivery takes 3-7 days domestically.
Returns are accepted within 30 days for unworn items in original packaging; customers cover return shipping unless the item was incorrect or defective.
For assistance, contact us at atTheTeam@fitsok.com or 828-328-5207.
Lifetime Guarantee
At Fitsok, we believe in our products and proudly offer a lifetime warranty on our athletic socks. If your socks don’t fit, develop a hole, or arrive with a defect, simply email us at orders@fitsok.com with a photo, and we’ll send a replacement right away.
Founded by two brothers with a passion for running, we’re dedicated to creating socks that meet the needs of athletes everywhere. Let us help you focus on your next run—just #runforit.
Made in America
Over 20 Years Of Manufacturing Excellence
Targeted Compression
Provides focused support in key areas to enhance comfort and reduce fatigue.
Moisture Wicking Fabric
Quickly draws sweat away to keep feet dry, preventing chafing.
Blister Guard Technology
Adds friction protection to minimize blisters and keep feet comfortable.
Why Runners Choose Fitsok.
Driven by Science
At Fitsok, we combine advanced materials with innovation to create socks that adapt to your every move, providing superior comfort and blister protection.
Each step feels effortless, allowing you to run further without limits.
Stay Cool & Dry with Sorbtek®
Our Sorbtek® fibers efficiently wick away moisture, keeping your feet cool and dry.
Whether you're racing or training, our socks ensure you stay fresh and focused.
Perform Stronger with Targeted Compression
Designed to support key pressure points, Fitsok’s compression technology enhances blood flow, reducing fatigue and improving performance mile after mile.
Built to Outlast Your Longest Runs
Built to last with reinforced high-impact zones, Fitsok socks stand the test of intense use, offering you reliability and comfort for countless runs.
The Difference is in the Details.
See why Fitsok outperforms the competition in comfort, durability, and design.
|
Other Running Socks |
|
|---|---|---|
| Sorbtek® moisture-wicking | ||
| Targeted compression zones | ||
| Blister-free guarantee | ||
| Reinforced impact areas | ||
| Durability for high-mileage | ||
| Designed for recovery support |
