The Nav-Mat is the most convenient mounting accessory for your portable GPS today. Using the physics of weight distribution and anti-skid materials, it creates a solid mounting base while turning your windshield-mounted GPS into a dash-mounted GPS. It conforms to the contours of your dashboard, allowing it to work on uneven or textured surfaces while the anti-skid underside keeps the device from sliding. Designed to work with devices up to several pounds using the stock windshield suction mount sold with most popular GPS units, the Nav-Mat requires no tools for installation. Can easily be moved from vehicle to vehicle. Also works well with other Bracketron windshield mounts for mounting satellite radio units, cell phones, and MP3 players.