A chastity belt is a special type of underwear that covers a woman's private parts and prevents her from having sex or touching herself. This is commonly used in BDSM lifestyle, in which people enjoy different forms of erotic activities that involve power and control. The chastity belt is usually locked using a key that the dominant partner keeps, ensuring that the submissive partner cannot remove it without permission. This can be a form of teasing or punishment, as the submissive partner may become aroused and unable to satisfy their desires. It is important to remember that all BDSM activities should be consensual and involve communication between both partners.