Cannot convert type 'AnonymousType#1'

Do you know how fix this error? It` s show error in this line "foreach (int s in itemColl)"

What I have to do?

Error 1 Cannot convert type 'AnonymousType#1' to 'int' C:\Users\Rafal\Desktop\MVC ksiązka\moj projekt\sklep\SportsStore.WebUI\Controllers\ProductController.cs 37 21 SportsStore.WebUI

var itemColl = from p in re.Kategorie
               where p.Nazwa == category
               select new
               {
                   p.Id_kat
               };


                foreach (int s in itemColl)
                {
                    Console.WriteLine(s);
                }