Fox River Trail Ankle Sock 38% nylon, 30% Merino wool, 30% acrylic, 2% spandex. Great fit and support mean you're cushioned, dry and comfy no matter where you end up. Dimensional knit for a memory fit. Relaxed top for stay-up comfort. Cushioned sole with mesh knit side channels for air flow to move moisture. Reinforced heel and toe f