If I could rate this as zero, I would. This item is definitely non-slip, but the design is poor at best. When driving on a flat road, your GPS will only wobble a little in this device. However, if you have to climb a small hill, your GPS will eventually fall out of the device and hit the ground. Also, if you stop at a traffic light or stop sign and press the accelerator to start driving, the same thing happens. I really feel like it was a great idea to make something like this, but the companyβ¦