I have a new style Astra and the rear headrest cushions are very narrow. Despite this being 'universal' it's tricky to fit onto these headrests. I thought I had it positioned nicely then it slipped forward whilst driving. I've now had to readjust it and hoping it stays in place now that I've wedged the base of the bracket on top of the seat itself. Great product in principle but the base of the bracket is just not suited to all types of car, you really have to pull at the straps to get them tight and even then I don't think they can go tight enough.