There are two types of handcuffs.  The "serious" ones carried by law enforcement, and the "fun" ones you use in the privacy of your own home.  These fun handcuffs are covered in a plush faux fur that make them very comfy to wear.   Set of handcuffs comes with two keys.  Handcuffs also have a quick release lever in case you need an emergency escape.  Handcuffs are adjustable to wrist size and easily lock and unlock with provided keys. Fun for role playing, bachelorette parties, dominatrix accessory and more.  One size fits most adults.