The CEP Outdoor Merino Sock is an amazing combination of CEP technology and Merino wool comfort. These combine to give the Outdoor Merino sock features unrivaled by any other brand. The unique blend of nylon, spandex, wool, and silk combine to create a durable, effective partner for your feet and boots no matter how far your adventure will take you. This, combines perfectly with unique progressive compression profile that improves circulation to the foot by stimulating blood flow, and reduces swelling over the course of the day. Wool is one of Mother Nature's best fibers; it provides both insulation and cooling, and it can prevent cold feet by absorbing moisture. Strategically placed padding on the ankle bones and over the first metatarsal head adds extra cushion and comfort for even the longest days. High-tech compression wool blend fibers and toe-box elasticity, ensure a perfect fit and a reassuring feel. The socks wrap snugly around the feet creating a second-skin, providing you with an unbelievable boot fit, guaranteed blister prevention, and one-of-a kind wearing comfort.