First, you put the cushion on the seat,remove the headrest. Align top hold with headrest holes and slide evenly over the shoulders of the seat,adjust the cushion to make it flat. Secondly,The back of the seat has two elastic straps connected to a plastic tab. Then,you slid this tab (flat) to the rear of the seat (between the seat and the backrest) and tuck it in so that it comes out the back. When it slips out the back, fold it up out of the flat position so that it will then not slid back through the set. Next,Then on the front flap of the seat cushion,there are two elastic straps with hooks on the end. Just clip them underneath the front of your seat somewhere. Finally,Slide the headrest cover over the headrest,use the vel-cro fixed it to the seat. It was really easy to install. And they do not slip at all.Adjust again after finish installation.