A super underrated sock!

FitSok's great F4 performance sock now with some color! You get one pair of each color shown in every 3-pack.

Designed to meet the demands of race-day athletes, the F4 utilizes special fabrics and a weave that provides compressed venting and moisture management 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.
• 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.
• Engineered Heel
• Max Arch Support
• FlowTech Air Channels
• Perfect Seamless Toe

A tremendous value for a high performance running sock!

FitSok F4 Running Sock Specs

Sock Fibers: