I see 2 ways:

1) Set up 4 different Actions:

   [AcceptVerbs(HttpVerbs.Get)] public ActionResult Index() {     //... }      [AcceptVerbs(HttpVerbs.Get)] public ActionResult IndexOnOffer() {     //... }      [AcceptVerbs(HttpVerbs.Get)] public ActionResult IndexInStock() {     //... }      [AcceptVerbs(HttpVerbs.Get)] public ActionResult IndexInStockAndOnOffer() {     //... } 

2) Send in the 2 parameters in the query string: http://localhost/products/?onlyInStock=false&onlyOnOffer=true

 [AcceptVerbs(HttpVerbs.Get)]     public ActionResult GetProducts(bool? onlyInStock, bool? onlyOnOffer)     {        //...     } 

You're best off using query strings for this. Note that the path is supposed to describe a resource - in this case, the resource that the user wants to get is the products page itself. Attributes like "only in stock" and "only on offer" are modifiers which change only how the resource is displayed to the end user; they don't change the fact that the resource you're getting is the products page.