Clothing is a fundamental part of everyone's everyday life, and there are four types of clothes that people wear: formalwear, semi-formalwear, casualwear, and activewear. Formalwear includes suits and tuxedos for men as well as dresses and gowns for women. Semi-formal attire consists of items like khakis or dressy slacks paired with a collared shirt for men, or skirts or dressy pants paired with a blouse for women. Casual clothing includes jeans or shorts accompanied by T-shirts or polo shirts; this type of clothing is often seen in everyday settings such as work and school. Finally, activewear is worn when participating in physical activities such as running errands or going to the gym; this typically includes athletic shorts, tracksuits, sweatpants and other breathable materials designed specifically for movement.