Designed to meet the demands of race-day athletes, the F4 utilizes Shadow Yarn to provide compressed venting and moisture wicking in the most extreme conditions. Made with Sorbtek, this sock channels moisture away from the foot, keeping it cool and dry. Anatomical left-right foot construction allows for precise fit, while a unique cushioning system provides comfort in specific pressure areas. Achilles protection reduces blistering on the back of the foot, and a front tab protects against shoe friction.

FITSOK Neo-Pop Now Show attributes

Engineered Performance - 3-Pack Durability
Running isn't just a sport - it's a lifestyle. FITSOK understands you run daily, and a 3-pack ensures you run in a fresh pair every time you lace up. It's part of our philosophy to keep athletes on their feet. When a sock enables athletes to excel, it becomes more than a sock. It's what you run for. So get out there and RUN FOR IT.

True to the Core
FITSOK is committed to making high quality products in our own backyard. That means engineering, wear-testing and constructing all products right here in the USA. The mission at FITSOK has always been clear: Give athletes the best in engineered fit and performance. We're about building products that allow everyone to excel. Whether running, biking, or training, each FITSOK pushes the boundaries of moisture and temperature management.