A bus switch chip is limited to operating with a power-supply voltage of 1. The light emitting device module includes a plurality of light emitting devices; a submount on which the light emitting devices are mounted; and a heat-radiant substrate to which the submount is fixed. In some configurations of the footwear, a first portion of the thread sections may extend between forefoot and heel regions of the footwear, and a second portion of the thread sections may extend vertically.