I am selling this item because I replaced my car. Although it is new and unused, it has been stored in the trunk of my car for about two years, so please understand this before purchasing. Usage Instructions: AutoSocks are emergency snow traction devices. They provide similar functionality to tire chains on snowy roads, but their durability and other characteristics differ from tire chains. Regulations regarding chain requirements vary depending on the local government and the understanding of the police officers in charge. Please be aware that you may not be able to pass through certain areas.