The Overdoor Traction Set will help those who suffer from back problems. Attach this set to the back of a door and add water to the weight bag to relieve pain. Complete instructions are found inside the package. This set consists of: Set of traction hardware 20 lb. water weight bag Velcro head halter 2 metal pulleys Traction cord Warnings: The Overdoor Traction Set will not reduce hanging skin from under the chin or make you grow taller. This product can be considered a torture device in certain countries (just kidding). Please check with your local government regarding all legal issues. Do not use as a strangulation method.