Abstract: A foot covering includes a sole unit, a shell unit, and a welt. The shell unit has a substantially horizontal bottom wall, a peripheral wall extending upwardly from the bottom wall, and a protrusion extending downwardly from the bottom wall and elongated along the peripheral wall. The welt is attached to the sole unit and the shell unit, and has an inner part connected to the protrusion, and an outer part sewn to the sole unit.

Abstract: A shoe includes a shell that has a bottom wall, and a peripheral wall which extends upward from a periphery of the bottom wall. The bottom wall includes a front region, a rear region, and an arch support region between the front and rear regions. An upper is connected to the peripheral wall. Front and heel sole units are connected to the front and rear regions of the bottom wall, respectively. At least one of the front and heel sole units includes a midsole component and an outsole component. The arch support region has no midsole component and no outsole component, and is provided with a ventilation hole.