Inspired by the mountains at sunset, the Women's PhD Ski Light Elite Afterglow Print sock was designed by pro skier Chris Benchtler and is packed with amazing features like strategically placed cushioning on the heel and toe, light shin cushion, and all the benefits of Merino to help keep you warm and dry. The 4 Degree elite fit system creates a dialed-in fit, and Indestructawool technology helps deliver long-lasting wear.