Hair extensions are a popular way to add length and volume to one's hair. Rattaills, also known as feather extensions, are a type of hair extension that is made up of several strands of hair that are attached to a single strand of hair. They are usually made from synthetic or human hair and can be used to create a variety of looks. Rattaills are a great way to add texture and color to your hair without having to commit to a permanent style.