The Womens 1908 Boot Sock Full Cushion is a full-length sock that is perfect for late autumn to spring or for trekking with a heavy backpack. Made with pre-shrunk New Zealand Merino wool that is not stuffy, deodorizing and antibacterial properties, and has excellent body temperature regulation. Darn Tufs proprietary weave on the sole and shin area provides more dense cushioning than regular cushion models, and a living room at the top of the ankle for a proper fit that stays in place. Elastic arch support, durable reinforcement in high-abrasion heel and toe and invisible toe seam toe construction for comfort Wide ribbed leg for a great fit.