What form of bondage is safest?

The main effect of suspension bondage is to create a heightened sense of vulnerability and inescapability, as the subject is made to feel that by attempting to free themselves they may fall and hurt themselves, thus also creating a form of mental bondage in addition to the physical one that holds them. Being suspended, especially in a large open space, also creates a sense of objectification, submissiveness and erotic helplessness for the subject, which can be erotically stimulating for them and for those observing them. Rope suspension is sometimes done as performance art at BDSM conventions and fetish-themed nightclubs.