Ylvis are a comedy duo from norway responsible for this years you tube sensation what does the fox say silly and yet one of the better european dance tracks weve heard in recent years im looking at you david guetta this is an official ylvis producthoodie design reads wtfs ylvisour hoodies are super heavy at 320g and made with 80 combed cotton and 20 polyester for exactly the right comfort and fit you want from a classic hoody