These give you more choices for selection. They have running, walking, and etc. They create the brands and hence they know the best. Well some of these shoes might be available at department stores or mass-merchandise store for quite a less but you get to know the type of shoes for activity in specific if you to the branded store. Nike is one of the best store that really understands the customer and their needs very well.
One a while they give promotional offers which you cannot miss to check out these stores.