The Smartwool® Ski Full Cushion Alpine Auroras Over The Calf Socks work to keep you comfortable and performing at your best in all conditions. Their Indestructawool™ technology with extended durability zones provides maximum comfort and durability. The 4-Degree™ Elite Fit System is designed for a dialed-in, performance-oriented fit. These pull-on socks feature a Virtually Seamless™ toe for all-day comfort and to minimize chaffing. They are made of Merino wool that helps manage moisture, regulate temperature, and resist odors.