Most M.Gemi shoes feature all-leather soles (some styles come with a rubber insert for traction and added durability). We love the beauty of our leather soles—each one is different and will wear uniquely. Because of the all-leather sole, initial wear may be slightly slippery, but will disappear quickly as the sole starts to wear. If preferred, your cobbler can place a thin rubber sole on your M.Gemi shoes (this helps keep them from slipping, and extends the life of the leather sole underneath!).