Injinji Sizing guide
Constructed to provide comfort and support even after miles of wear, the Ultra Run No-Show features cushioned terry throughout the foot and toes, to help soften the impact of tough runs and workouts on feet. Each toe is separated, eliminating all skin-on-skin contact between the toes and preventing blisters, while knit lines on the bottom of the footbed offer additional arch support. The No-Show length rests below the ankle and features a heel tab to protect against chafing.