Dynafit Alpine men's trial running shoe with excellent grip Megagrip sole from Vibram The Dynafit Alpine men's trial running shoe (code 64064) is ideal for various technical terrain conditions thanks to its balanced cushioning and comfortable fit. With a drop of 6 mm from the heel to the forefoot, it is the ideal shoe for fast training and running of various distances. Among the outstanding features are its lightness and the grip of the Vibram sole with the MEGAGRIP rubber compound. The rounded Alpine Rocker sole design and balanced suspension achieve a dynamic and responsive feel from the ground.