K-SWISS Men's Vertical Tubes Cali-Mari II Running Shoe 100% Synthetic Imported Rubber sole A barefoot ride, Zero Heel-Lift running shoe with low profile maximum shock absorbing Vertical Tubes Technology. An injection EVA is obtained with mid-foot support construction that hugs the center of the foot. Breathability is increased with open air mesh upper. Special formula EVA to provide maximized cushioning and enhance durability of the midsole. FKS00206