The Goodyear Welt construction is traditionally used because it allows for comfort, durability, and the ability to be resoled. A strip of leather, know as the welt, is sewn to edge of the upper and midsole. Before sewing the final outsole to complete the shoe, the cavity between the outsole and midsole is filled with cork, which serves as a cushion and a way for the shoe to “breathe.” Because of this cork layer in the midsole, the footbed retains the shape of the wearer’s foot, improving fit and comfort. Over time, when the sole wears out, the welt can be undone and a new sole is attached back to the welt, without disturbing the imprinted leather and cork midsole.