Very good idea this support that is placed where you want it on the beach of the dashboard. It does not slip and even supports a large slope of the beach without slipping. The main interest: the GPS holds well and it is no longer necessary to fix it on the windshield, where it leaves traces round and falls when it is very hot. It would be perfect, but it is expensive. An equally effective accessory, sold for Tomtom costs less than half ...