I think there is supposed to be a couple of velcro strips on the underside of your parcel shelf. I didn't have any on mine but they were there originally. I just use the velcro to stick to the parcel shelf carpet on the underside, the main thing on these covers is that you use the press studs,also ,make sure the hooks that are on the inside of the cover are hooked onto the two loops of the hood and it will be secure enough.