This sounded like a good idea because I wanted to avoid advertising the presence of a satnav via the rings that the TomTom holder leaves on the windscreen. The advertising blurb for this beanbag actually says that it will solve this problem. However, as it is necessary to permanently glue a plastic hook onto the dashboard to hook the beanbag onto, the hook is doing the job of the ring on the windscreen and advertising that my car has a satnav! The beanbag is also much larger than expected, rigid and very, very heavy, and still needs the rubbish windscreen mount - you just suction-grip it to the centre of this holder rather than the windscreen. I found it very awkward to use, and my satnav kept falling off it. The beanbag for my husband's satnav is really a beanbag - a small cushion full of some small beads or beans - with a non-slip backing that you just drop onto the dashboard and the satnav never slips anywhere - very simple - why can't TomTom do the same? Really disappointed with this product. (Seems to me that the GO710 and other TomTom models need to have sockets/connectors actually on the satnav device, not on the separate mount, to get over all these problems.)