Dri-FIT technology helps keep feet dry and comfortable. Cushioning in high-wear areas help absorb impact. Dynamic arch provides a supportive fit and feel. Anatomically correct left/right design for a natural fit. 100% Textile.
Medium= Women's Shoe Size 6-10/Men's Shoe Size 6-8
Large= Women's Shoe Size 10-13/Men's Shoe Size 8-12