Brooks changes little about this classic walking shoe, but they made the changes count!?? Still using a midsole to support you in anything and everything you may encounter with a BioMoGo DNA midsole working in conjunction with the Extended Progressive Diagonal Rollbar, the Addiction Walker 2 features an updated leather upper design as well as a new certified slip-resistant outsole (SATRA TM144:2011).?? Is there really a need for anything else?