Fairy Black Mother hair cap will protect your hair. This hair cap is perfect for sleeping, exercise, work, or just for lounging. There is no elastic band to create friction on your edges that can lead to thinness. Instead our no elastic band hair cap can be included as a part of your hair care regimen if you are trying to re grow your hair. It is important to get oxygen to the scalp to maintain its health. This durable hair cap is breathable which means more oxygen to the hair and scalp. An added plus, it will help to keep moisture in your hair and frizz free. It will help to keep head cool at night and is very comfortable.