midsole wear

When to Replace Running Shoes

Mileage is the weakest way to judge a worn pair. The reliable signals are midsole creasing, new unexplained aches, and outsole worn through to the foam.
heel to toe offset

Running Shoe Drop Explained: What Heel-to-Toe Offset Changes

Heel-to-toe drop is the height gap between heel and forefoot in millimetres. Here is what it changes in your legs, and why switching it abruptly hurts.