Some pronation is normal — the inward roll is how your foot absorbs shock. Overpronation is when that roll keeps going past neutral, dragging the ankle and knee inward with it, and it's strongly associated with flat or collapsing arches. Stability shoes counter it with firmer foam on the inner edge, guide rails that catch the roll late, and wider platforms that resist tipping in the first place. The picks below come from SoleHunt's engine run with an overpronation profile — ranked on actual support features. Mild overpronators often do fine in neutral shoes; if your knees or arches complain on higher mileage, that's when these earn their keep.