The Hoka Arahi 4 is a moderate stability trainer that is built for many miles at different paces. It has a J-Frame midsole for stability and a rocker-like shaped midsole that allows for smooth impacts, transitions, and toe offs. It also has a breathable engineered mesh upper that is lighter weight and more breathable than previous editions. Worn for a short period, EUC. Always worn with a specialty insole so Hoka insoles are brand new. 8.5 but fit like 9, run big.