adidas Duramo 7 Women's Running Shoes Synthetic Fabric sole Sandwich mesh upper - Allows the foot to breathe with key ventilation. Synthetic overlays with welded three stripes - Stabilises the upper structure through vigorous movements. Ortholite sockliner - Provides optimal underfoot cushioning. Heel counter - Supports the rear of the foot through transition. Padded tongue - provides a cushioned, close fit.