First Lite's All-Season Merino Wool Socks are Made-In-USA and built for versatility. From the ever-changing conditions of the fall mountains to the cool spring mornings of the turkey woods, these midweight merino wool socks pack the performance to keep you on your feet all season long. FeaturesMidweight cushioning from heel to toe-box and front of shinBreathable Lycra fit panels through top of foot and back of ankleSeamless construction for enhanced comfort and durabilityMeasures 12.5" from cuff to heel (size MD)63% Merino Wool, 33% Nylon, 4% Lycra Spandex