This product is created from leather materials at the outer shell. This covering is met with components of stitching for a sound hang on the products and strength for an used fitting. The sewing stretches from top of the to produce split up systems on the brooks dyad running shoes. That produces side-by-side helps at the midfoot. That sewing matches at the foot package to produce a resistor to demands and abrasions. Top of the functions the flexible gores that expand for installing and reunite to create for a good hang on the foot.