non-twisting aramide/carbon compound hard shell > superlatively excellent Evo technique, the best possible protection for your feet hard shell also provided in the forefoot area particularly shock-absorbing and flexible padding under the shell four layer shinbone protection shock-absorbing insoles in the calf and heel areas shock-absorbing foam padding in the calf and heel areas robust plastic hard shell with hinged joint aramide elastic stretch zone for better flexibility anatomically formed -> spherical heel bed sweat-absorbing fine leather full lining anatomically formed climatic insole