ISW Isolwool® Heather No-Show Pro That means there’s a whole

That means there’s a whole lot of dynamic movement happening and up until now

fashion-forward aesthetic and high-performance design

Made of 39% Merino Wool

Designed to meet the demands of race-day athletes

ISW Isolwool® Heather No-Show Pro That means there’s a wholeNo Show wool Twin Turbo? We got it! 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