The Salomon Walk Soles Blocks are used to convert any Salomon boot with interchangeable bi-material pads (flat soles) to a grippy, WTR hiking sole that offers significant traction advantages while booting. These soles are compatible with regular alpine bindings, Walk-to-Ride (WTR) binding systems and most frame alpine touring bindings. They are not compatible with Tech (Dynafit) type bindings.