ISW Isolwool®Mid Calf Crew mens Constructed with Isolwool®

Constructed with Isolwool®

Say goodbye to sweaty

and we're delighted to hear how much runners everywhere are loving our socks

The two brothers who started FitSok happen to be third-generation sock makers AND passionate runners

speed & comfort

ISW Isolwool®Mid Calf Crew mens Constructed with Isolwool®Been looking for the end all, be all wool trail sock? We've been getting tons of requests for an ISW Crew, and it's finally here. 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