Custom Foot operates six retail locations. At first glance, none looks any different from your basic old-fashioned shoe store, but the only boots on hand are display models. There's no inventory for sale and customers go home empty-handed-at least initially. Customers browse the store, mixing and matching design components such as style, color, and leather type. About 100 display boots provide style guidelines. Once you choose a boot style, you select materials, colors, and textures. Custom Foot guarantees your boots will be ready within three weeks. This is an example of

This is an example of mass customization

Explanation:

Mass customization is a business concept that involves mass manufacturing products that meet individual consumer wants and needs. It combines flexibility and personalization of unique made products with the low unit costs associated with mass production. It is sensitive to customer preferences with standardisation of processes, and the customer satisfaction that comes with owning a custom product.  

Custom Foot offers a basic package for their boots and shoes, and then offer customers a variety of features they can add or subtract. With this, they can provide alternatives for modifying a product without the costs associated with making a 100 percent unique product.

answer; (15,000)workers each