The new, updated version of the ultimate casual Mary Jane! Perfect for work or a night out on the town. The unique multi-layered sole and Masai sensor emulates the feeling of walking on sand. MBT Sirima 5 Mary-Jane Metallic Grape Wine Leather Women's Shoe Features include: Calf leather upper with hook and loop closure to help ensure a custom fit Lining allows moisture to wick and helps keep your feet cool and dry Dual density midsole is made with TPU and nylon mixed with glass fibers for extra firmness and durability Multi-layered sole creates natural instability to emulate the feeling of walking on sand and increases shock absorption Dressy rubber outsole Removable insoles so that you can add your own orthotic insoles This MBT style features removable insoles so that you can add your own orthotic insoles. Although to fully benefit from the MBT technology the MBT shoes should be worn without orthotics. The MBT Index simplifies the process of finding the right level of MBT shoe for your needs. It ranks MBT into one of three categories, starting at Activate, our least level of rock, and progressing through Dynamic and ending with our highest level of rock, Performance.