PURPOSE: A pair of footwear is provided to prevent wearing in wrong way by enabling a wearer to easily recognize the wrong position of shoes. CONSTITUTION: A pair of footwear comprises left side footwear (100a), right side footwear (100b), a perception unit(120), and an alarm unit(130). The left side footwear is prepared for the left foot to be inserted. The right side footwear makes a counterpart with the left side footwear. The right side footwear is prepared for right foot to be inserted. The perception unit detects the situation in which the locations of the right and left footwear are switched. The alarm unit is connected to the perception unit. The alarm unit generates alarm according to the operation of the perception unit when the wrong location of the right and left footwear is detected so that a wearer can recognize the situation.
