Designed primarily for footwear with a removable insole, Superfeet GREEN provides maximum support and shock absorption. Ideal for Medium to High arch shaped feet. Recommended footwear: Ski, Snowboarding, Run, Hike, and Walking. SUPERFEET SIZING CHART. Men's: 5.5-7 (C), 7.5-9 (D), 9.5-11 (E), 11.5-13 (F), 13.5-15 (G), 15.5-17 (H). Women's: 4.5-6 (B), 6.5-8 (C), 8.5-10 (D), 10.5-12 (E). Kid's: 11.5-13 (J), 13.5-2 (A), 2.5-4 (B).