They are two-piece wrist cuffs linked with a metal chain and lined for greater comfort. • They are resistant and effective. • Includes 2 keys and a safety catch. An immediate excitement! If you want to be even more naughty, use this toy together with other Darkness items. Darkness is a brand of new generation 2020, all our materials are of excellent quality ensuring that the manufacturing compromises a perfect result for beginners or advanced people who like the Fetish or BDSM world.