Onitsuka Tiger Unisex Dualio Shoes (D6K3N, Black/Silver)

The DUALIO™ model is based on the design of a previous training/running shoe called the MONTREAL™ shoe, which released in the early 1980's. Original features such as the cut-out-arch sole silhouette for lightness of weight, the grooves at the midsole for flexibility, and the herringbone tread handle everything from pavement to rough roads.