A human pony harness is used for bondage - which can be for restraint, decoration and/or to facilitate work such as pulling a cart. It is usually made of leather but can be rope, biothane or other appropriate material. It is wrapped (usually with buckles for adjustment) around the wearer's body in such a way that it cannot be slipped off. The wearer may have his/her hands strapped behind his/her back, although this is not usually recommended for pulling a cart or other work, in case of a fall. D-rings can be attached, so ropes or chains can be put on to lead the person around.