Abstract: A system and method of selling and distributing custom-fit shoes by a footwear manufacturer or seller. Each footwear includes a shoe shell with a foot bed cover, an arch support member, and an upper foot bed cover. Pad pockets are formed on the inside surfaces of the shoe's medial and lateral sides and on the tongue. Distributed with each shoe shell is a fit adjustment kit with a plurality of arch support pads, medial pads, lateral pads, forefoot pads, and tongue pads. The kit includes several sizes of arch support pads, medial pads, lateral pads, and tongue pads thereby enabling the user to interchange them and adjust the fit for optimal comfort. The fit of each shoe shell in a pair of footwear can be adjusted independently. The method of selling shoes includes a creation of a website where a plurality of different styles and sizes of shoes with fit adjustment kits are offered for sale.