Here is a look at the underneath of the cushion which shows how the pet cover is constructed. The cushion is placed inside the front nose of the pet cover and then an elastic strap holds the back of the pet cover in place. Just slide the elastic over the cushion and slide the cushion out. So nice and easy for frequent washings.
Here is a closeup of how the pet cover looks on the cushion.
Foxy loves toys so I made her a bone toy to match her new slipcover.