This is a must-have when wearing a full wig. It gathers your natural hair to prepare the base and prevents the wig from slipping. It also helps to prevent the wig's base from being visible. Wearing a wig cap also alleviates irritation, such as the wig directly touching the scalp and causing a prickly feeling, as well as itchiness caused by stuffiness. Wig caps are used between the wig and the scalp, and they come into direct contact with the skin, so it is recommended to replace and wash them frequently. They also reduce damage and odors from sweat, etc., to the wig itself, making daily wig care easier. I opened it to take photos; it's a set of two brand-new pieces. Thank you for your consideration.