Hair covering is a term used to describe any type of headwear that covers the hair. The two most common solutions for this term are NET and SNOOD. A NET is a piece of fabric with small holes, usually made of nylon or cotton, which is worn over the hair to keep it in place. A SNOOD is a type of head covering that is usually made of knitted or crocheted material and is worn around the head and neck to keep the hair in place.