ISW Isolwool® Trail Cuff Featured Mesh venting and Flowtek™ channels

Mesh venting and Flowtek™ channels move moisture and heat away from the foot

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Want an extra layer of protection from distraction

Want an extra layer of protection

ISW Isolwool® Trail Cuff Featured Mesh venting and Flowtek™ channelsReinforced 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