Footwear refers to garments worn on the feet, which typically serve the purpose of protection against adversities of the environment such as wear from rough ground; stability on slippery ground; and temperature. Shoes and similar garments ease locomotion and prevent injuries.
Casual shoe styles typically refer to footwear that is comfortable, relaxed, and suitable for informal occasions.
A good shoe should provide comfort to your feet, especially if you are going to wear them for extended periods.