The Smartwool Junior 's PHD Ultralight Ski Socks gives juniors a sock that fits and feels like it was made just for them. It was designed to help racers and athletes keep moving in winter. It features top technologies, including the Indestructawool™ technology for enhanced durability, and the Shred Shield™ technology that reduces wear from toes. The 4 Degree™ elite fit system adds a dialed, performance-oriented fit. With all of this comfort and durability, these ski socks help bring out their best on the slopes.