The Spherical Cuffs by Si Novelties are most certainly a unique cuffing system. The packaging itself has a large picture of the lock and key system while also having a see-through plastic window on the top. Within, contains the spherical cuff itself, a lock, and key. Your prisoner will cross their wrists and pretty much have to willingly surrender to you. While they can be used for regular play in and out of the bedroom, these metal cuffs work better for something like a photo shoot. They bring a very exotic look to any set.