A hoodie (sometimes spelled "hoody" in some situations and also known as a hooded sweatshirt) is a sweatshirt with a hood. Hoodies frequently include a muff sewed into the bottom front, as well as (typically) a drawstring to alter the hood opening. In modern culture, hoodies are commonly worn by teenagers and young adults. They are usually made of cotton or polyester and often feature printed designs or logos. Hoodies have become popular again since 1990s fashion trends changed their image from that of a criminal uniform to that of an aesthetic garment. Today, hoodies are commonly worn by celebrities, athletes, and artists. The word "hoodie" comes from the words "hood" and "jacket." Since they were first invented in the 1950s, hoodies have been various shapes and sizes. Early on, they were all-cotton garments with a zipper up the back. Nowadays, they can be made of many different materials including denim, leather, fur, etc. Hoodies are typically divided into three main categories: crew-neck, v-neck, and shawl collar. Each type of hoodie has its own advantages for specific activities or climates. For example, a v-neck hoodie is better for warmer temperatures because it doesn't hide as much skin compared to a crew-neck hoodie which tends to be more popular in colder environments.