What is Breast Bondage?

Type of bondage where the tits play the main role. Also part of BDSM practices. The basic breast bondage technique is done by using rope that is tied around the base of the boobs. That makes the tits bulge outwards. Sometimes the bondage is so tight, the boobs turn red or purple. To make proper breast bondage, you can use different tools, usually rope, ribbon, or leather straps. You can also use the Japanese term Shinju for breast bondage.