Contoured, flexible support. Cradles your feet with targeted cushioning that improves your athletic performance and prolongs the life of your shoes. Ideal for walking, running, training and sports. Seven sizes fit: men's 6-15, women's 5-12. Size 1 2 3 4 5 6 7  US Men's Shoe Size   6-7 8-9 10-11 12-13 14-15 16-17  US Women's Shoe Size 5-6 7-8 9-10 11-12        UK Shoe Size 4-5 5-6 7-8 9-10 11-12 13-14    European Shoe Size 36-38 38-40 40-42 42-44 44-46 46-48