Bondage is consensually tying, binding, or restraining a partner for erotic stimulation. Ropes, cuffs, bondage tape, or other restraints may be used for this purpose. Sexuality and erotica are important aspects in bondage, but are often not the end in itself. A common reason for the active partner to tie up their partner is so both may gain pleasure from the restrained partner's submission and the feeling of the temporary transfer of control and power. One partner can derive visual pleasure from seeing their partner tied up, and the other partner can derive tactile pleasure from the feeling of helplessness and immobility.