My partner and I use this set all of the time! Since the cuffs attach independently, there are a myriad of ways to restrain a person to themselves, objects, or other devices. If you're flexible enough (or in the right position), you can tie and untie yourself, which can be a pleasant surprise for someone to come home to. The cuffs are comfortable enough to be worn for extended periods of time and are since they're velcro, you can release quickly if needed. We were worried about how long these would last and how much struggling they could endure, but we're delighted at their reliability. This 5-piece set is one of my favourite toys!