An Eton collar is a type of collar that is stiff and stands up around the neck. It is typically seen on formal shirts and is named after the famous British school, Eton College. A FLEA collar is a type of collar that is made of lace or other delicate material and is often seen on blouses and dresses. A WING collar is a type of collar that has two wings that stand up around the neck and is typically seen on formal shirts. A Snap-on collar is a type of collar that is designed to be easily attached to a shirt with snaps. Finally, a Peter Pan collar is a type of collar that is round and flat and is often seen on children's clothing. All of these collars are types of collars that can be worn as part of an outfit.