Features - Windy Peaks Classic sock that reaches the middle of the calf Medium cushioning Premium wool blend Channeled air cushioning Ankle protection Protection in boots Active padding Active fabric Technologies Infiknit Stance uses an air jet to give the nylon fiber a texture that allows it to cling to the twisted yarns. This grip greatly increases abrasion resistance, which prevents holes, tears and rips. Crew A classic sock that extends to the mid-calf. Medium padding Moderate padding throughout the sock for a secure fit with improved impact protection. Channeled-Air cushioning Channeled-air cushioning provides breathability. Engineered Ankle Protection Engineered ankle protection protects your feet from annoying shoe rubbing. Boot protection Strategic cushioning provides comfort for all activities. Active cushioning Active cushioning combines impact protection with comfort to help you keep moving forward. Active fabric Active fabric keeps you cool with maximized airflow and breathability.