Get a boot buddy, it lines the sides and the back and you can get a rubber mat to stop any slipping. I did a lot of research and this is a great product, you don't need to punch any holes in the boot either, also no Velcro required it is free standing. I've had Volvo liners in the past and they are not the best. The boot buddy has kept my boot spotless through the winter with two beach loving hairy dogs!