A hairnet, or sometimes simply a net or caul, is a small, usually elasticised, light net wore over long hair to keep it in place. It is used to keep hair restrained. Hairnets are part of standard attire for female horse riders and are used in most equestrian orders, including dressage, eventing, show jumping, and hunting.
I Believe in Free will because everyone literally believe in Free will. Free will is the idea that we are able to have choice in how we act and assumes that we are free to chose our behavior, in other words we are self determined.